网上书城所需的jar包及工具类
需求需要哪些jar包需要哪些工具类util包BaseDao.javaBuildTree.javaDateUtil.javaDBAccess.javaEasyuiResult.javaEncodingFiter.javaMD5.javaPageBean.javaPinYinUtil.javaPropertiesUtil.javaResponseUtil.javaStringUtils.javaconfig.properties
tag包PageTag 分页
vo包TreeVo
先创建一个网上书城的项目，用于编写后端代码
需求
需要哪些jar包
jar包总共需要23个，分别是
需要哪些工具类
做网上书城需要util包，tag包，vo包中的工具类
util包
BaseDao.java
package com.tang.util;
import java.lang.reflect.Field;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.util.ArrayList;
import java.util.List;
/**
*
* 做通用的增删改 分页 的父类
*/
public class BaseDao<T> {
// 查询
public List<T> executeQuery(String sql, PageBean pageBean,Class clz)throws Exception{
List<T> list = new ArrayList<>();
Connection con = DBAccess.getConnection();
PreparedStatement pst=null;
ResultSet rs = null;
if (pageBean!=null && pageBean.isPagination()){
// 获取符合条件的总记录数用于后续分页
String countSql = getCountSql(sql);
pst = con.prepareStatement(countSql);
rs = pst.executeQuery();
if(rs.next()){
pageBean.setTotal(rs.getObject(1).toString());
}
// 查询出页面要展示的结果
String pageSql = getPageSql(sql,pageBean.getStartIndex(),pageBean.getRows());
pst = con.prepareStatement(pageSql);
rs = pst.executeQuery();
}else{
// 不分页
pst = con.prepareStatement(sql);
rs = pst.executeQuery();
}
T t;
while (rs.next()){
// 通过反射解决通用查询的问题
// list.add(new Book(rs.getInt("bid"),rs.getString("bname"),rs.getFloat("price")));
// 通过反射来做
t = (T) clz.newInstance();
// 给t中的属性赋值
Field[] fields = clz.getDeclaredFields();
for (Field f : fields) {
f.setAccessible(true);
f.set(t,rs.getObject(f.getName()));
}
list.add(t);
}
DBAccess.close(con,pst,rs);
return list;
}
// 用原始sql拼装出查询符合条件分页展示的数据的sql
private String getPageSql(String sql, int startIndex, int rows) {
return sql+" limit "+startIndex+","+rows;
}
// 用原始sql拼装出查询符合条件的总记录的sql
private String getCountSql(String sql) {
return " select count(1) from ("+sql+") t";
}
/**
* 通用的增删改操作（hibernate/mybatis的底层）
* @param sql
* @param t book
* @param attrs book实例中的属性
* @return
* @throws Exception
*/
public int executeUpdate(String sql, T t,String[] attrs)throws Exception{
Connection con = DBAccess.getConnection();
PreparedStatement pst = con.prepareStatement(sql);
// pst.setObject(1, book.getBid());
// pst.setObject(2, book.getBname());
// pst.setObject(3, book.getPrice());
Field f = null;
Field[] fields = t.getClass().getDeclaredFields();
for (int i = 0; i < attrs.length; i++) {
// 属性数组中的第i个属性对象 下标从0开始
f = t.getClass().getDeclaredField(attrs[i]);
f.setAccessible(true);
// 给第i+1占位符赋值 下表从1开始
pst.setObject(i+1,f.get(t));
}
int num = pst.executeUpdate();
DBAccess.close(con,pst,null);
return num;
}
}
BuildTree.java
package com.tang.util;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import com.tang.vo.TreeVo;
public class BuildTree {
/**
* 默认-1为顶级节点
* @param nodes
* @param <T>
* @return
*/
public static <T> TreeVo<T> build(List<TreeVo<T>> nodes) {
if (nodes == null) {
return null;
}
List<TreeVo<T>> topNodes = new ArrayList<TreeVo<T>>();
for (TreeVo<T> children : nodes) {
String pid = children.getParentId();
if (pid == null || "-1".equals(pid)) {
topNodes.add(children);
continue;
}
for (TreeVo<T> parent : nodes) {
String id = parent.getId();
if (id != null && id.equals(pid)) {
parent.getChildren().add(children);
children.setHasParent(true);
parent.setChildren(true);
continue;
}
}
}
TreeVo<T> root = new TreeVo<T>();
if (topNodes.size() == 1) {
root = topNodes.get(0);
} else {
root.setId("000");
root.setParentId("-1");
root.setHasParent(false);
root.setChildren(true);
root.setChecked(true);
root.setChildren(topNodes);
root.setText("顶级节点");
Map<String, Object> state = new HashMap<>(16);
state.put("opened", true);
root.setState(state);
}
return root;
}
/**
* 指定idparam为顶级节点
* @param nodes
* @param idParam
* @param <T>
* @return
*/
public static <T> List<TreeVo<T>> buildList(List<TreeVo<T>> nodes, String idParam) {
if (nodes == null) {
return null;
}
List<TreeVo<T>> topNodes = new ArrayList<TreeVo<T>>();
for (TreeVo<T> children : nodes) {
String pid = children.getParentId();
if (pid == null || idParam.equals(pid)) {
topNodes.add(children);
continue;
}
for (TreeVo<T> parent : nodes) {
String id = parent.getId();
if (id != null && id.equals(pid)) {
parent.getChildren().add(children);
children.setHasParent(true);
parent.setChildren(true);
continue;
}
}
}
return topNodes;
}
}
DateUtil.java
package com.tang.util;
import java.text.SimpleDateFormat;
import java.util.Date;
/**
* 日期处理工具包
* @author Administrator
*
*/
public class DateUtil {
/**
* 日期转字符串
* @param date
* @param format
* @return
*/
public static String formatDate(Date date,String format){
String result="";
SimpleDateFormat sdf=new SimpleDateFormat(format);
if(date!=null){
result=sdf.format(date);
}
return result;
}
/**
* 字符串转日期
* @param str
* @param format
* @return
* @throws Exception
*/
public static Date formatString(String str,String format) throws Exception{
SimpleDateFormat sdf=new SimpleDateFormat(format);
return sdf.parse(str);
}
/**
* 获取当前时间的字符串
* @return
* @throws Exception
*/
public static String getCurrentDateStr()throws Exception{
Date date=new Date();
SimpleDateFormat sdf=new SimpleDateFormat("yyyyMMddhhmmss");
return sdf.format(date);
}
}
DBAccess.java
package com.tang.util;
import java.io.InputStream;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import java.util.Properties;
/**
* 提供了一组获得或关闭数据库对象的方法
*
*/
public class DBAccess {
private static String driver;
private static String url;
private static String user;
private static String password;
static {// 静态块执行一次，加载 驱动一次
try {
InputStream is = DBAccess.class
.getResourceAsStream("config.properties");
Properties properties = new Properties();
properties.load(is);
driver = properties.getProperty("driver");
url = properties.getProperty("url");
user = properties.getProperty("user");
password = properties.getProperty("pwd");
Class.forName(driver);
} catch (Exception e) {
e.printStackTrace();
throw new RuntimeException(e);
}
}
/**
* 获得数据连接对象
*
* @return
*/
public static Connection getConnection() {
try {
Connection conn = DriverManager.getConnection(url, user, password);
return conn;
} catch (SQLException e) {
e.printStackTrace();
throw new RuntimeException(e);
}
}
public static void close(ResultSet rs) {
if (null != rs) {
try {
rs.close();
} catch (SQLException e) {
e.printStackTrace();
throw new RuntimeException(e);
}
}
}
public static void close(Statement stmt) {
if (null != stmt) {
try {
stmt.close();
} catch (SQLException e) {
e.printStackTrace();
throw new RuntimeException(e);
}
}
}
public static void close(Connection conn) {
if (null != conn) {
try {
conn.close();
} catch (SQLException e) {
e.printStackTrace();
throw new RuntimeException(e);
}
}
}
public static void close(Connection conn, Statement stmt, ResultSet rs) {
close(rs);
close(stmt);
close(conn);
}
public static boolean isOracle() {
return "oracle.jdbc.driver.OracleDriver".equals(driver);
}
public static boolean isSQLServer() {
return "com.microsoft.sqlserver.jdbc.SQLServerDriver".equals(driver);
}
public static boolean isMysql() {
return "com.mysql.jdbc.Driver".equals(driver);
}
public static void main(String[] args) {
Connection conn = DBAccess.getConnection();
DBAccess.close(conn);
System.out.println("isOracle：" + isOracle());
System.out.println("isSQLServer：" + isSQLServer());
System.out.println("isMysql：" + isMysql());
System.out.println("数据库连接(关闭)成功");
}
}
EasyuiResult.java
package com.tang.util;
public class EasyuiResult<T> {
private long total;
private T rows;
private int code;
private String msg;
// 响应成功
public static EasyuiResult SUCCESS = new EasyuiResult(200,"响应成功");
private EasyuiResult(int code, String msg) {
this.code = code;
this.msg = msg;
}
private EasyuiResult(long total, T rows) {
this.total = total;
this.rows = rows;
}
private EasyuiResult(T rows) {
this.rows = rows;
}
// 带分页的
public static <T> EasyuiResult<T> ok(long total, T rows){
return new EasyuiResult<T>(total,rows);
}
// 不带分页的
public static <T> EasyuiResult<T> ok(T rows){
return new EasyuiResult<T>(rows);
}
public long getTotal() {
return total;
}
public void setTotal(long total) {
this.total = total;
}
public T getRows() {
return rows;
}
public void setRows(T rows) {
this.rows = rows;
}
public int getCode() {
return code;package com.tang.util;
import java.io.IOException;
import java.util.Iterator;
import java.util.Map;
import java.util.Set;
import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.annotation.WebFilter;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
/**
* 中文乱码处理
*
*/
@WebFilter(filterName = "encodingFiter",urlPatterns = "/*")
public class EncodingFiter implements Filter {
private String encoding = "UTF-8";// 默认字符集
public EncodingFiter() {
super();
}
public void destroy() {
}
public void doFilter(ServletRequest request, ServletResponse response,
FilterChain chain) throws IOException, ServletException {
HttpServletRequest req = (HttpServletRequest) request;
HttpServletResponse res = (HttpServletResponse) response;
// 中文处理必须放到 chain.doFilter(request, response)方法前面
res.setContentType("text/html;charset=" + this.encoding);
if (req.getMethod().equalsIgnoreCase("post")) {
req.setCharacterEncoding(this.encoding);
} else {
// Map map = req.getParameterMap();// 保存所有参数名=参数值(数组)的Map集合
// Set set = map.keySet();// 取出所有参数名
// Iterator it = set.iterator();
// while (it.hasNext()) {
// String name = (String) it.next();
// String[] values = (String[]) map.get(name);// 取出参数值[注：参数值为一个数组]
// for (int i = 0; i < values.length; i++) {
// values[i] = new String(values[i].getBytes("ISO-8859-1"),
// this.encoding);
// }
// }
}
chain.doFilter(request, response);
}
public void init(FilterConfig filterConfig) throws ServletException {
String s = filterConfig.getInitParameter("encoding");// 读取web.xml文件中配置的字符集
if (null != s && !s.trim().equals("")) {
this.encoding = s.trim();
}
}
}
}
public void setCode(int code) {
this.code = code;
}
public String getMsg() {
return msg;
}
public void setMsg(String msg) {
this.msg = msg;
}
private EasyuiResult(long total, T rows, int code, String msg) {
super();
this.total = total;
this.rows = rows;
this.code = code;
this.msg = msg;
}
private EasyuiResult() {
super();
}
}
EncodingFiter.java
package com.tang.util;
import java.io.IOException;
import java.util.Iterator;
import java.util.Map;
import java.util.Set;
import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.annotation.WebFilter;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
/**
* 中文乱码处理
*
*/
@WebFilter(filterName = "encodingFiter",urlPatterns = "/*")
public class EncodingFiter implements Filter {
private String encoding = "UTF-8";// 默认字符集
public EncodingFiter() {
super();
}
public void destroy() {
}
public void doFilter(ServletRequest request, ServletResponse response,
FilterChain chain) throws IOException, ServletException {
HttpServletRequest req = (HttpServletRequest) request;
HttpServletResponse res = (HttpServletResponse) response;
// 中文处理必须放到 chain.doFilter(request, response)方法前面
res.setContentType("text/html;charset=" + this.encoding);
if (req.getMethod().equalsIgnoreCase("post")) {
req.setCharacterEncoding(this.encoding);
} else {
// Map map = req.getParameterMap();// 保存所有参数名=参数值(数组)的Map集合
// Set set = map.keySet();// 取出所有参数名
// Iterator it = set.iterator();
// while (it.hasNext()) {
// String name = (String) it.next();
// String[] values = (String[]) map.get(name);// 取出参数值[注：参数值为一个数组]
// for (int i = 0; i < values.length; i++) {
// values[i] = new String(values[i].getBytes("ISO-8859-1"),
// this.encoding);
// }
// }
}
chain.doFilter(request, response);
}
public void init(FilterConfig filterConfig) throws ServletException {
String s = filterConfig.getInitParameter("encoding");// 读取web.xml文件中配置的字符集
if (null != s && !s.trim().equals("")) {
this.encoding = s.trim();
}
}
}
MD5.java
给密码进行加密
package com.tang.util;
/**
* 使用MD5算法对字符串进行加密的工具类。 MD5即Message-Digest
* Algorithm5(信息-摘要算法5)，是一种用于产生数字签名的单项散列算法， 这个算法是不可逆的，
* 也就是说即使你看到源程序和算法描述，也无法将一个MD5的值变换回原始的字符串
*
*/
public class MD5 {
/*
* 下面这些S11-S44实际上是一个4*4的矩阵，在原始的C实现中是用#define 实现的， 这里把它们实现成为static
* final是表示了只读，切能在同一个进程空间内的多个 Instance间共享
*/
private static final int S11 = 7;
private static final int S12 = 12;
private static final int S13 = 17;
private static final int S14 = 22;
private static final int S21 = 5;
private static final int S22 = 9;
private static final int S23 = 14;
private static final int S24 = 20;
private static final int S31 = 4;
private static final int S32 = 11;
private static final int S33 = 16;
private static final int S34 = 23;
private static final int S41 = 6;
private static final int S42 = 10;
private static final int S43 = 15;
private static final int S44 = 21;
private static final byte[] PADDING = { -128, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0 };
/*
* 下面的三个成员是MD5计算过程中用到的3个核心数据，在原始的C实现中 被定义到MD5_CTX结构中
*
*/
private long[] state = new long[4]; // state (ABCD)
private long[] count = new long[2];// number of bits, modulo 2^64(lsbfirst)
private byte[] buffer = new byte[64]; // input buffer
/*
* digest,是最新一次计算结果的2进制内部表示，表示128bit的MD5值.
*/
private byte[] digest = new byte[16];
public MD5() {
md5Init();
}
/*
* getMD5ofStr是类MD5最主要的公共方法，入口参数是你想要进行MD5变换的字符串
* 返回的是变换完的结果，这个结果是从公共成员digestHexStr取得的．
*/
public String getMD5ofStr(String inbuf) {
md5Init();
md5Update(inbuf.getBytes(), inbuf.length());
md5Final();
String digestHexStr = "";
for (int i = 0; i < 16; i++) {
digestHexStr += byteHEX(digest[i]);
}
return digestHexStr;
}
/* md5Init是一个初始化函数，初始化核心变量，装入标准的幻数 */
private void md5Init() {
count[0] = 0L;
count[1] = 0L;
// /* Load magic initialization constants.
state[0] = 0x67452301L;
state[1] = 0xefcdab89L;
state[2] = 0x98badcfeL;
state[3] = 0x10325476L;
return;
}
/*
* F, G, H ,I 是4个基本的MD5函数，在原始的MD5的C实现中，由于它们是
* 简单的位运算，可能出于效率的考虑把它们实现成了宏，在java中，我们把它们 实现成了private方法，名字保持了原来C中的。
*/
private long F(long x, long y, long z) {
return (x & y) | ((~x) & z);
}
private long G(long x, long y, long z) {
return (x & z) | (y & (~z));
}
private long H(long x, long y, long z) {
return x ^ y ^ z;
}
private long I(long x, long y, long z) {
return y ^ (x | (~z));
}
/*
* FF,GG,HH和II将调用F,G,H,I进行近一步变换 FF, GG, HH, and II transformations for
* rounds 1, 2, 3, and 4. Rotation is separate from addition to prevent
* recomputation.
*/
private long FF(long a, long b, long c, long d, long x, long s, long ac) {
a += F(b, c, d) + x + ac;
a = ((int) a << s) | ((int) a >>> (32 - s));
a += b;
return a;
}
private long GG(long a, long b, long c, long d, long x, long s, long ac) {
a += G(b, c, d) + x + ac;
a = ((int) a << s) | ((int) a >>> (32 - s));
a += b;
return a;
}
private long HH(long a, long b, long c, long d, long x, long s, long ac) {
a += H(b, c, d) + x + ac;
a = ((int) a << s) | ((int) a >>> (32 - s));
a += b;
return a;
}
private long II(long a, long b, long c, long d, long x, long s, long ac) {
a += I(b, c, d) + x + ac;
a = ((int) a << s) | ((int) a >>> (32 - s));
a += b;
return a;
}
/*
* md5Update是MD5的主计算过程，inbuf是要变换的字节串，inputlen是长度，这个
* 函数由getMD5ofStr调用，调用之前需要调用md5init，因此把它设计成private的
*/
private void md5Update(byte[] inbuf, int inputLen) {
int i, index, partLen;
byte[] block = new byte[64];
index = (int) (count[0] >>> 3) & 0x3F;
// /* Update number of bits */
if ((count[0] += (inputLen << 3)) < (inputLen << 3))
count[1]++;
count[1] += (inputLen >>> 29);
partLen = 64 - index;
// Transform as many times as possible.
if (inputLen >= partLen) {
md5Memcpy(buffer, inbuf, index, 0, partLen);
md5Transform(buffer);
for (i = partLen; i + 63 < inputLen; i += 64) {
md5Memcpy(block, inbuf, 0, i, 64);
md5Transform(block);
}
index = 0;
} else
i = 0;
// /* Buffer remaining input */
md5Memcpy(buffer, inbuf, index, i, inputLen - i);
}
/*
* md5Final整理和填写输出结果
*/
private void md5Final() {
byte[] bits = new byte[8];
int index, padLen;
// /* Save number of bits */
Encode(bits, count, 8);
// /* Pad out to 56 mod 64.
index = (int) (count[0] >>> 3) & 0x3f;
padLen = (index < 56) ? (56 - index) : (120 - index);
md5Update(PADDING, padLen);
// /* Append length (before padding) */
md5Update(bits, 8);
// /* Store state in digest */
Encode(digest, state, 16);
}
/*
* md5Memcpy是一个内部使用的byte数组的块拷贝函数，从input的inpos开始把len长度的
* 字节拷贝到output的outpos位置开始
*/
private void md5Memcpy(byte[] output, byte[] input, int outpos, int inpos,
int len) {
int i;
for (i = 0; i < len; i++)
output[outpos + i] = input[inpos + i];
}
/*
* md5Transform是MD5核心变换程序，有md5Update调用，block是分块的原始字节
*/
private void md5Transform(byte block[]) {
long a = state[0], b = state[1], c = state[2], d = state[3];
long[] x = new long[16];
Decode(x, block, 64);
/* Round 1 */
a = FF(a, b, c, d, x[0], S11, 0xd76aa478L); /* 1 */
d = FF(d, a, b, c, x[1], S12, 0xe8c7b756L); /* 2 */
c = FF(c, d, a, b, x[2], S13, 0x242070dbL); /* 3 */
b = FF(b, c, d, a, x[3], S14, 0xc1bdceeeL); /* 4 */
a = FF(a, b, c, d, x[4], S11, 0xf57c0fafL); /* 5 */
d = FF(d, a, b, c, x[5], S12, 0x4787c62aL); /* 6 */
c = FF(c, d, a, b, x[6], S13, 0xa8304613L); /* 7 */
b = FF(b, c, d, a, x[7], S14, 0xfd469501L); /* 8 */
a = FF(a, b, c, d, x[8], S11, 0x698098d8L); /* 9 */
d = FF(d, a, b, c, x[9], S12, 0x8b44f7afL); /* 10 */
c = FF(c, d, a, b, x[10], S13, 0xffff5bb1L); /* 11 */
b = FF(b, c, d, a, x[11], S14, 0x895cd7beL); /* 12 */
a = FF(a, b, c, d, x[12], S11, 0x6b901122L); /* 13 */
d = FF(d, a, b, c, x[13], S12, 0xfd987193L); /* 14 */
c = FF(c, d, a, b, x[14], S13, 0xa679438eL); /* 15 */
b = FF(b, c, d, a, x[15], S14, 0x49b40821L); /* 16 */
/* Round 2 */
a = GG(a, b, c, d, x[1], S21, 0xf61e2562L); /* 17 */
d = GG(d, a, b, c, x[6], S22, 0xc040b340L); /* 18 */
c = GG(c, d, a, b, x[11], S23, 0x265e5a51L); /* 19 */
b = GG(b, c, d, a, x[0], S24, 0xe9b6c7aaL); /* 20 */
a = GG(a, b, c, d, x[5], S21, 0xd62f105dL); /* 21 */
d = GG(d, a, b, c, x[10], S22, 0x2441453L); /* 22 */
c = GG(c, d, a, b, x[15], S23, 0xd8a1e681L); /* 23 */
b = GG(b, c, d, a, x[4], S24, 0xe7d3fbc8L); /* 24 */
a = GG(a, b, c, d, x[9], S21, 0x21e1cde6L); /* 25 */
d = GG(d, a, b, c, x[14], S22, 0xc33707d6L); /* 26 */
c = GG(c, d, a, b, x[3], S23, 0xf4d50d87L); /* 27 */
b = GG(b, c, d, a, x[8], S24, 0x455a14edL); /* 28 */
a = GG(a, b, c, d, x[13], S21, 0xa9e3e905L); /* 29 */
d = GG(d, a, b, c, x[2], S22, 0xfcefa3f8L); /* 30 */
c = GG(c, d, a, b, x[7], S23, 0x676f02d9L); /* 31 */
b = GG(b, c, d, a, x[12], S24, 0x8d2a4c8aL); /* 32 */
/* Round 3 */
a = HH(a, b, c, d, x[5], S31, 0xfffa3942L); /* 33 */
d = HH(d, a, b, c, x[8], S32, 0x8771f681L); /* 34 */
c = HH(c, d, a, b, x[11], S33, 0x6d9d6122L); /* 35 */
b = HH(b, c, d, a, x[14], S34, 0xfde5380cL); /* 36 */
a = HH(a, b, c, d, x[1], S31, 0xa4beea44L); /* 37 */
d = HH(d, a, b, c, x[4], S32, 0x4bdecfa9L); /* 38 */
c = HH(c, d, a, b, x[7], S33, 0xf6bb4b60L); /* 39 */
b = HH(b, c, d, a, x[10], S34, 0xbebfbc70L); /* 40 */
a = HH(a, b, c, d, x[13], S31, 0x289b7ec6L); /* 41 */
d = HH(d, a, b, c, x[0], S32, 0xeaa127faL); /* 42 */
c = HH(c, d, a, b, x[3], S33, 0xd4ef3085L); /* 43 */
b = HH(b, c, d, a, x[6], S34, 0x4881d05L); /* 44 */
a = HH(a, b, c, d, x[9], S31, 0xd9d4d039L); /* 45 */
d = HH(d, a, b, c, x[12], S32, 0xe6db99e5L); /* 46 */
c = HH(c, d, a, b, x[15], S33, 0x1fa27cf8L); /* 47 */
b = HH(b, c, d, a, x[2], S34, 0xc4ac5665L); /* 48 */
/* Round 4 */
a = II(a, b, c, d, x[0], S41, 0xf4292244L); /* 49 */
d = II(d, a, b, c, x[7], S42, 0x432aff97L); /* 50 */
c = II(c, d, a, b, x[14], S43, 0xab9423a7L); /* 51 */
b = II(b, c, d, a, x[5], S44, 0xfc93a039L); /* 52 */
a = II(a, b, c, d, x[12], S41, 0x655b59c3L); /* 53 */
d = II(d, a, b, c, x[3], S42, 0x8f0ccc92L); /* 54 */
c = II(c, d, a, b, x[10], S43, 0xffeff47dL); /* 55 */
b = II(b, c, d, a, x[1], S44, 0x85845dd1L); /* 56 */
a = II(a, b, c, d, x[8], S41, 0x6fa87e4fL); /* 57 */
d = II(d, a, b, c, x[15], S42, 0xfe2ce6e0L); /* 58 */
c = II(c, d, a, b, x[6], S43, 0xa3014314L); /* 59 */
b = II(b, c, d, a, x[13], S44, 0x4e0811a1L); /* 60 */
a = II(a, b, c, d, x[4], S41, 0xf7537e82L); /* 61 */
d = II(d, a, b, c, x[11], S42, 0xbd3af235L); /* 62 */
c = II(c, d, a, b, x[2], S43, 0x2ad7d2bbL); /* 63 */
b = II(b, c, d, a, x[9], S44, 0xeb86d391L); /* 64 */
state[0] += a;
state[1] += b;
state[2] += c;
state[3] += d;
}
/*
* Encode把long数组按顺序拆成byte数组，因为java的long类型是64bit的， 只拆低32bit，以适应原始C实现的用途
*/
private void Encode(byte[] output, long[] input, int len) {
int i, j;
for (i = 0, j = 0; j < len; i++, j += 4) {
output[j] = (byte) (input[i] & 0xffL);
output[j + 1] = (byte) ((input[i] >>> 8) & 0xffL);
output[j + 2] = (byte) ((input[i] >>> 16) & 0xffL);
output[j + 3] = (byte) ((input[i] >>> 24) & 0xffL);
}
}
/*
* Decode把byte数组按顺序合成成long数组，因为java的long类型是64bit的，
* 只合成低32bit，高32bit清零，以适应原始C实现的用途
*/
private void Decode(long[] output, byte[] input, int len) {
int i, j;
for (i = 0, j = 0; j < len; i++, j += 4)
output[i] = b2iu(input[j]) | (b2iu(input[j + 1]) << 8)
| (b2iu(input[j + 2]) << 16) | (b2iu(input[j + 3]) << 24);
return;
}
/*
* b2iu是我写的一个把byte按照不考虑正负号的原则的＂升位＂程序，因为java没有unsigned运算
*/
private static long b2iu(byte b) {
return b < 0 ? b & 0x7F + 128 : b;
}
/*
* byteHEX()，用来把一个byte类型的数转换成十六进制的ASCII表示，
* 因为java中的byte的toString无法实现这一点，我们又没有C语言中的 sprintf(outbuf,"X",ib)
*/
private static String byteHEX(byte ib) {
char[] Digit = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A',
'B', 'C', 'D', 'E', 'F' };
char[] ob = new char[2];
ob[0] = Digit[(ib >>> 4) & 0X0F];
ob[1] = Digit[ib & 0X0F];
String s = new String(ob);
return s;
}
public static void main(String args[]) {
String source = "888888";
MD5 md5 = new MD5();
String s1 = md5.getMD5ofStr(source);// length=32
System.out.println(s1);
}
}
PageBean.java
package com.tang.util;
import java.util.HashMap;
import java.util.Map;
import javax.servlet.http.HttpServletRequest;
/**
* 分页工具类
*/
public class PageBean {
private int page = 1;// 页码
private int rows = 10;// 页大小
private int total = 0;// 总记录数
private boolean pagination = true;// 是否分页
// 保存上一次请求的所有参数
private Map<String, String[]> paMap = new HashMap<>();
// 保存上一次请求的Url
private String url;
public void setRequest(HttpServletRequest req) {
this.setPage(req.getParameter("page"));
this.setRows(req.getParameter("rows"));
this.setPagination(req.getParameter("pagination"));
// 重要
this.setPaMap(req.getParameterMap());
this.setUrl(req.getRequestURL().toString());
}
private void setPagination(String pagination) {
if (StringUtils.isNotBlank(pagination))
this.pagination = !"false".equals(pagination);
}
private void setRows(String rows) {
if (StringUtils.isNotBlank(rows))
this.rows = Integer.valueOf(rows);
}
private void setPage(String page) {
if (StringUtils.isNotBlank(page))
this.page = Integer.valueOf(page);
}
public Map<String, String[]> getPaMap() {
return paMap;
}
public void setPaMap(Map<String, String[]> paMap) {
this.paMap = paMap;
}
public String getUrl() {
return url;
}
public void setUrl(String url) {
this.url = url;
}
public PageBean() {
super();
}
public int getPage() {
return page;
}
public void setPage(int page) {
this.page = page;
}
public int getRows() {
return rows;
}
public void setRows(int rows) {
this.rows = rows;
}
public int getTotal() {
return total;
}
public void setTotal(int total) {
this.total = total;
}
public void setTotal(String total) {
this.total = Integer.parseInt(total);
}
public boolean isPagination() {
return pagination;
}
public void setPagination(boolean pagination) {
this.pagination = pagination;
}
public int getStartIndex() {
return (this.page - 1) * this.rows;
}
public int getMaxPage() {
return this.total % this.rows == 0 ? this.total / this.rows : this.total / this.rows + 1;
}
// 上一页
public int getPrevPage() {
return this.page > 1 ? this.page - 1 : this.page;
}
// 下一页
public int getNextPage() {
return this.page < getMaxPage() ? this.page + 1 : this.page;
}
@Override
public String toString() {
return "PageBean [page=" + page + ", rows=" + rows + ", total=" + total + ", pagination=" + pagination + "]";
}
}
PinYinUtil.java
package com.tang.util;
import java.util.regex.Pattern;
import net.sourceforge.pinyin4j.PinyinHelper;
import net.sourceforge.pinyin4j.format.HanyuPinyinCaseType;
import net.sourceforge.pinyin4j.format.HanyuPinyinOutputFormat;
import net.sourceforge.pinyin4j.format.HanyuPinyinToneType;
import net.sourceforge.pinyin4j.format.HanyuPinyinVCharType;
import net.sourceforge.pinyin4j.format.exception.BadHanyuPinyinOutputFormatCombination;
/**
* 拼音工具类，能将汉字转换成拼音的首字母
*/
public class PinYinUtil {
// 名字长度
private static int NAME_LENGTH = 3;
/**
* 将首个汉字转换为全拼
* 其他是汉字首字母
* @param src
* @return
*/
public static String getPingYin(String src) {
char[] name = src.toCharArray();
String[] newName = new String[name.length];
HanyuPinyinOutputFormat pyFormat = new HanyuPinyinOutputFormat();
pyFormat.setCaseType(HanyuPinyinCaseType.LOWERCASE);
pyFormat.setToneType(HanyuPinyinToneType.WITHOUT_TONE);
pyFormat.setVCharType(HanyuPinyinVCharType.WITH_V);
String account = "";
int length = name.length;
try {
// 名字大于等于3个字的时候，姓取全称,名取首字母。
if(length>=NAME_LENGTH){
for (int i = 0; i < length; i++) {
// 截取姓
if(i==0){
// 判断是否为汉字字符
if (Character.toString(name[i]).matches("[\\u4E00-\\u9FA5]+")) {
newName = PinyinHelper.toHanyuPinyinStringArray(name[i], pyFormat);
account += newName[0];
} else
account += Character.toString(name[i]);
}else{
account += getPinYinHeadChar(Character.toString(name[i]));
}
}
}else{
// 只有2个字的名字,账号是名字的拼音全称
for (int i = 0; i < length; i++) {
// 判断是否为汉字字符
if (Character.toString(name[i]).matches("[\\u4E00-\\u9FA5]+")) {
newName = PinyinHelper.toHanyuPinyinStringArray(name[i], pyFormat);
account += newName[0];
} else
account += Character.toString(name[i]);
}
}
return account;
} catch (BadHanyuPinyinOutputFormatCombination e1) {
e1.printStackTrace();
}
return account;
}
/**
* 全部汉字转换成拼音
* @param src
* @return
*/
public static String getAllPingYin(String src) {
StringBuffer sb = new StringBuffer();
String [] arr = src.split("");
for (String s : arr) {
sb.append(PinYinUtil.getPingYin(s));
}
return sb.toString();
}
/**
* 返回中文的首字母
* @param str
* @return
*/
public static String getPinYinHeadChar(String str) {
String convert = "";
for (int j = 0; j < str.length(); j++) {
char word = str.charAt(j);
String[] pinyinArray = PinyinHelper.toHanyuPinyinStringArray(word);
if (pinyinArray != null) {
convert += pinyinArray[0].charAt(0);
} else {
convert += word;
}
}
return convert;
}
public static void main(String[] args) {
String cn = "保存并插入数据库";
System.out.println(PinYinUtil.getAllPingYin(cn));
System.out.println(PinYinUtil.getPingYin(cn));
System.out.println(PinYinUtil.getPinYinHeadChar(cn));
}
}
PropertiesUtil.java
package com.tang.util;
import java.io.IOException;
import java.io.InputStream;
import java.util.Properties;
/**
* properties工具类
* @author user
*
*/
public class PropertiesUtil {
/**
* 根据key获取value值
* @param key
* @return
*/
public static String getValue(String key){
Properties prop=new Properties();
InputStream in=new PropertiesUtil().getClass().getResourceAsStream("/resources.properties");
try {
prop.load(in);
} catch (IOException e) {
e.printStackTrace();
}
return prop.getProperty(key);
}
}
ResponseUtil.java
package com.tang.util;
import com.fasterxml.jackson.databind.ObjectMapper;
import java.io.PrintWriter;
import javax.servlet.http.HttpServletResponse;
public class ResponseUtil {
public static void write(HttpServletResponse response,Object o)throws Exception{
response.setContentType("text/html;charset=utf-8");
PrintWriter out=response.getWriter();
out.println(o.toString());
out.flush();
out.close();
}
public static void writeJson(HttpServletResponse response,Object o)throws Exception{
ObjectMapper om = new ObjectMapper();
write(response,om.writeValueAsString(o));
}
}
StringUtils.java
package com.tang.util;
public class StringUtils {
// 私有的构造方法，保护此类不能在外部实例化
private StringUtils() {
}
/**
* 如果字符串等于null或去空格后等于""，则返回true，否则返回false
*
* @param s
* @return
*/
public static boolean isBlank(String s) {
boolean b = false;
if (null == s || s.trim().equals("")) {
b = true;
}
return b;
}
/**
* 如果字符串不等于null或去空格后不等于""，则返回true，否则返回false
*
* @param s
* @return
*/
public static boolean isNotBlank(String s) {
return !isBlank(s);
}
}
config.properties
#oracle9i
#driver=oracle.jdbc.driver.OracleDriver
#url=jdbc:oracle:thin:@localhost:1521:ora9
#user=test
#pwd=test
#sql2005
#driver=com.microsoft.sqlserver.jdbc.SQLServerDriver
#url=jdbc:sqlserver://localhost:1423;DatabaseName=test
#user=sa
#pwd=sa
#sql2000
#driver=com.microsoft.jdbc.sqlserver.SQLServerDriver
#url=jdbc:microsoft:sqlserver://localhost:1433;databaseName=unit6DB
#user=sa
#pwd=888888
#mysql5
driver=com.mysql.jdbc.Driver
url=jdbc:mysql://localhost:3306/tangxinlian?useUnicode=true&characterEncoding=utf-8&allowMultiQueries=true&useSSL=false
user=root
pwd=
tag包
PageTag 分页
package com.tang.tag;
import java.io.IOException;
import java.util.Map;
import java.util.Map.Entry;
import java.util.Set;
import javax.servlet.jsp.JspException;
import javax.servlet.jsp.JspWriter;
import javax.servlet.jsp.tagext.BodyTagSupport;
import com.tang.util.PageBean;
public class PageTag extends BodyTagSupport{
private static final long serialVersionUID = -8012081268314346782L;
private PageBean pageBean;
public PageBean getPageBean() {
return pageBean;
}
public void setPageBean(PageBean pageBean) {
this.pageBean = pageBean;
}
@Override
public int doStartTag() throws JspException {
JspWriter out = pageContext.getOut();
try {
out.print(toHTML());
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return super.doStartTag();
}
private String toHTML() {
StringBuilder sb = new StringBuilder();
// 上一次查询的from表单的html拼接
sb.append("<form id='pageBeanForm' action='"+pageBean.getUrl()+"' method='post'>");
// 查第几页的数据
sb.append("<input type='hidden' name='page'>");
// 重要设置拼接操作，将上一次请求参数携带到下一次
Map<String, String[]> parameterMap = pageBean.getPaMap();
if(parameterMap.size()>0){
Set<Entry<String,String[]>> entrySet = parameterMap.entrySet();
for (Entry<String, String[]> entry : entrySet) {
if(!"page".equals(entry.getKey())){
for (String val : entry.getValue()) {
sb.append("<input type='hidden' name='"+entry.getKey()+"' value='"+val+"'>");
}
}
}
}
sb.append("</form>");
// 默认展示前面4页，当前页，后面5页
int page = pageBean.getPage();
int max = pageBean.getMaxPage();
int before = page > 4 ? 4 : page-1;
int after = 10 - 1 - before;//5
after = max - page > after ? after : max-page;
// 用来控制上一页的点击按钮特效的
boolean startFlag = page > 1;
// 用来控制下一页的点击按钮特效的
boolean endFlag = page < max;
// 拼接分页条
sb.append("<ul class='pagination'>");
sb.append("<li class='page-item "+(startFlag ? "" : "")+"'><a class='page-link' href='javascript:gotoPage(1)'>首页</a></li>");
sb.append("<li class='page-item "+(startFlag ? "" : "")+"'><a class='page-link' href='javascript:gotoPage("+pageBean.getPrevPage()+")'><</a></li>");
// 代表了当前页的前4页
for (int i = before; i > 0 ; i--) {
sb.append("<li class='page-item'><a class='page-link' href='javascript:gotoPage("+(page-i)+")'>"+(page-i)+"</a></li>");
}
sb.append("<li class='page-item active'><a class='page-link' href='javascript:gotoPage("+pageBean.getPage()+")'>"+pageBean.getPage()+"</a></li>");
// 代表了当前页的后5页
for (int i = 1; i <= after; i++) {
sb.append("<li class='page-item'><a class='page-link' href='javascript:gotoPage("+(page+i)+")'>"+(page+i)+"</a></li>");
}
sb.append("<li class='page-item "+(endFlag ? "" : "")+"'><a class='page-link' href='javascript:gotoPage("+pageBean.getNextPage()+")'>></a></li>");
sb.append("<li class='page-item "+(endFlag ? "" : "")+"'><a class='page-link' href='javascript:gotoPage("+pageBean.getMaxPage()+")'>尾页</a></li>");
sb.append("<li class='page-item go-input'><b>到第</b><input class='page-link' type='text' id='skipPage' name='' /><b>页</b></li>");
sb.append("<li class='page-item go'><a class='page-link' href='javascript:skipPage()'>确定</a></li>");
sb.append("<li class='page-item'><b>共"+pageBean.getTotal()+"条</b></li>");
sb.append("</ul>");
// 拼接分页的js代码
sb.append("<script type='text/javascript'>");
sb.append("function gotoPage(page) {");
sb.append("document.getElementById('pageBeanForm').page.value = page;");
sb.append("document.getElementById('pageBeanForm').submit();");
sb.append("}");
sb.append("function skipPage() {");
sb.append("var page = document.getElementById('skipPage').value;");
sb.append("if (!page || isNaN(page) || parseInt(page) < 1 || parseInt(page) > "+max+") {");
sb.append("alert('请输入1~N的数字');");
sb.append("return;");
sb.append("}");
sb.append("gotoPage(page);");
sb.append("}");
sb.append("</script>");
return sb.toString();
}
}
要把PageTag分页配置到 zking.tld 中
<?xml version="1.0" encoding="UTF-8" ?>
<taglib xmlns="http://java.sun.com/xml/ns/j2ee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-jsptaglibrary_2_0.xsd"
version="2.0">
<description>zking 1.1 core library</description>
<display-name>zking core</display-name>
<tlib-version>1.1</tlib-version>
<short-name>z</short-name>
<uri>/zking</uri>
<tag>
<name>page</name>
<tag-class>com.tang.tag.PageTag</tag-class>
<body-content>JSP</body-content>
<attribute>
<name>pageBean</name>
<required>true</required>
<rtexprvalue>true</rtexprvalue>
</attribute>
</tag>
</taglib>
vo包
TreeVo
package com.tang.vo;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
public class TreeVo<T> {
/**
* 节点ID
*/
private String id;
/**
* 显示节点文本
*/
private String text;
/**
* 节点状态，open closed
*/
private Map<String, Object> state;
/**
* 节点是否被选中 true false
*/
private boolean checked = false;
/**
* 节点属性
*/
private Map<String, Object> attributes;
/**
* 节点的子节点
*/
private List<TreeVo<T>> children = new ArrayList<TreeVo<T>>();
/**
* 父ID
*/
private String parentId;
/**
* 是否有父节点
*/
private boolean hasParent = false;
/**
* 是否有子节点
*/
private boolean hasChildren = false;
public String getId() {
return id;
}
public void setId(String id) {
this.id = id;
}
public String getText() {
return text;
}
public void setText(String text) {
this.text = text;
}
public Map<String, Object> getState() {
return state;
}
public void setState(Map<String, Object> state) {
this.state = state;
}
public boolean isChecked() {
return checked;
}
public void setChecked(boolean checked) {
this.checked = checked;
}
public Map<String, Object> getAttributes() {
return attributes;
}
public void setAttributes(Map<String, Object> attributes) {
this.attributes = attributes;
}
public List<TreeVo<T>> getChildren() {
return children;
}
public void setChildren(List<TreeVo<T>> children) {
this.children = children;
}
public boolean isHasParent() {
return hasParent;
}
public void setHasParent(boolean isParent) {
this.hasParent = isParent;
}
public boolean isHasChildren() {
return hasChildren;
}
public void setChildren(boolean isChildren) {
this.hasChildren = isChildren;
}
public String getParentId() {
return parentId;
}
public void setParentId(String parentId) {
this.parentId = parentId;
}
public TreeVo(String id, String text, Map<String, Object> state, boolean checked, Map<String, Object> attributes,
List<TreeVo<T>> children, boolean isParent, boolean isChildren, String parentID) {
super();
this.id = id;
this.text = text;
this.state = state;
this.checked = checked;
this.attributes = attributes;
this.children = children;
this.hasParent = isParent;
this.hasChildren = isChildren;
this.parentId = parentID;
}
public TreeVo() {
super();
}
}
今天先把网上书城项目中所需要的jar包及工具类写好，明天就写登录注册及书籍管理功能，加油！！！
