hibernate练习：保存客户及通用编码解决方案GenericEncodingFilter
2018-01-15 22:08
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准备：
1、创建web项目
2、导包：hibernate包、数据库驱动包、标签库包、BeanUtils包
3、引入静态页面
4、搭建hibernate框架
思路分析：
customer/add.jsp
AddCustomerServlet
CustomServiceImpl
CustomerDaoImpl
GenericEncodingFilter
web.xml
1、创建web项目
2、导包：hibernate包、数据库驱动包、标签库包、BeanUtils包
3、引入静态页面
4、搭建hibernate框架
思路分析：
customer/add.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<TITLE>添加客户</TITLE>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<LINK href="${pageContext.request.contextPath }/css/Style.css" type=text/css rel=stylesheet>
<LINK href="${pageContext.request.contextPath }/css/Manage.css" type=text/css
rel=stylesheet>
<META content="MSHTML 6.00.2900.3492" name=GENERATOR>
</HEAD>
<BODY>
<!-- 保存客户业务功能 -->
<FORM id=form1 name=form1
action="${pageContext.request.contextPath }/addCustomer"
method=post>
<TABLE cellSpacing=0 cellPadding=0 width="98%" border=0>
<TBODY>
<TR>
<TD width=15><IMG src="${pageContext.request.contextPath }/images/new_019.jpg"
border=0></TD>
<TD width="100%" background="${pageContext.request.contextPath }/images/new_020.jpg"
height=20></TD>
<TD width=15><IMG src="${pageContext.request.contextPath }/images/new_021.jpg"
border=0></TD>
</TR>
</TBODY>
</TABLE>
<TABLE cellSpacing=0 cellPadding=0 width="98%" border=0>
<TBODY>
<TR>
<TD width=15 background=${pageContext.request.contextPath }/images/new_022.jpg><IMG
src="${pageContext.request.contextPath }/images/new_022.jpg" border=0></TD>
<TD vAlign=top width="100%" bgColor=#ffffff>
<TABLE cellSpacing=0 cellPadding=5 width="100%" border=0>
<TR>
<TD class=manageHead>当前位置：客户管理 > 添加客户</TD>
</TR>
<TR>
<TD height=2></TD>
</TR>
</TABLE>
<TABLE cellSpacing=0 cellPadding=5 border=0>
<TR>
<td>客户名称：</td>
<td>
<INPUT class=textbox id=sChannel2
style="WIDTH: 180px" maxLength=50 name="cust_name">
</td>
<td>客户级别 ：</td>
<td>
<INPUT class=textbox id=sChannel2
style="WIDTH: 180px" maxLength=50 name="cust_level">
</td>
</TR>
<TR>
<td>信息来源 ：</td>
<td>
<INPUT class=textbox id=sChannel2
style="WIDTH: 180px" maxLength=50 name="cust_source">
</td>
<td>联系人：</td>
<td>
<INPUT class=textbox id=sChannel2
style="WIDTH: 180px" maxLength=50 name="cust_linkman">
</td>
</TR>
<TR>
<td>固定电话 ：</td>
<td>
<INPUT class=textbox id=sChannel2
style="WIDTH: 180px" maxLength=50 name="cust_phone">
</td>
<td>移动电话 ：</td>
<td>
<INPUT class=textbox id=sChannel2
style="WIDTH: 180px" maxLength=50 name="cust_mobile">
</td>
</TR>
<tr>
<td rowspan=2>
<INPUT class=button id=sButton2 type=submit
value=" 保存 " name=sButton2>
</td>
</tr>
</TABLE>
</TD>
<TD width=15 background="${pageContext.request.contextPath }/images/new_023.jpg">
<IMG src="${pageContext.request.contextPath }/images/new_023.jpg" border=0></TD>
</TR>
</TBODY>
</TABLE>
<TABLE cellSpacing=0 cellPadding=0 width="98%" border=0>
<TBODY>
<TR>
<TD width=15><IMG src="${pageContext.request.contextPath }/images/new_024.jpg"
border=0></TD>
<TD align=middle width="100%"
background="${pageContext.request.contextPath }/images/new_025.jpg" height=15></TD>
<TD width=15><IMG src="${pageContext.request.contextPath }/images/new_026.jpg"
border=0></TD>
</TR>
</TBODY>
</TABLE>
</FORM>
</BODY>
</HTML>AddCustomerServlet
package cn.itheima.web;
import java.io.IOException;
import java.lang.reflect.InvocationTargetException;
import java.util.Map;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.commons.beanutils.BeanUtils;
import cn.itheima.domain.Customer;
import cn.itheima.service.CustomerService;
import cn.itheima.service.impl.CustomerServiceImpl;
/**
* Servlet implementation class AddCustomerServlet
*/
public class AddCustomerServlet extends HttpServlet {
private static final long serialVersionUID = 1L;
private CustomerService customerService = new CustomerServiceImpl();
protected void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
// 1.获得参数并封装到Customer对象中
Customer c = new Customer();
try {
Map<String, String[]> parameterMap = request.getParameterMap();
BeanUtils.populate(c, parameterMap);
} catch (IllegalAccessException | InvocationTargetException e) {
e.printStackTrace();
}
// 2.调用service层保存客户
customerService.save(c);
// 3.重定向到客户列表页面
// response.sendRedirect(request.getContextPath() + "/listCustomer ");
}
protected void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
doGet(request, response);
}
}CustomServiceImpl
package cn.itheima.service.impl;
import cn.itheima.dao.CustomerDao;
import cn.itheima.dao.impl.CustomerDaoImpl;
import cn.itheima.domain.Customer;
import cn.itheima.service.CustomerService;
public class CustomerServiceImpl implements CustomerService {
private CustomerDao customerDao = new CustomerDaoImpl();
public void save(Customer c) {
//调用dao保存客户
customerDao.save(c);
}
}CustomerDaoImpl
package cn.itheima.dao.impl;
import org.hibernate.Session;
import org.hibernate.Transaction;
import cn.itheima.dao.CustomerDao;
import cn.itheima.domain.Customer;
import cn.itheima.utils.HibernateUtils;
public class CustomerDaoImpl implements CustomerDao {
// 保存客户
public void save(Customer c) {
//1、获得session
Session session = HibernateUtils.openSession();
//2、开启事务
Transaction tx = session.beginTransaction();
//3、执行保存
session.save(c);
//4、提交事务
tx.commit();
//5、 关闭session
session.close();
}
}GenericEncodingFilter
package cn.itheima.web.filter;
import java.io.IOException;
import java.io.UnsupportedEncodingException;
import java.util.Map;
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.http.HttpServletRequest;
import javax.servlet.http.HttpServletRequestWrapper;
/**
* 通用编码解决方案
*
*/
public class GenericEncodingFilter implements Filter {
@Override
public void destroy() {
}
@Override
public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException {
// 转型为与协议相关对象
HttpServletRequest httpServletRequest = (HttpServletRequest) request;
// 对request包装增强
HttpServletRequest myrequest = new MyRequest(httpServletRequest);
chain.doFilter(myrequest, response);
}
@Override
public void init(FilterConfig filterConfig) throws ServletException {
}
}
// 自定义request对象
class MyRequest extends HttpServletRequestWrapper {
private HttpServletRequest request;
private boolean hasEncode;
public MyRequest(HttpServletRequest request) {
super(request);// super必须写
this.request = request;
}
// 对需要增强方法 进行覆盖
@Override
public Map getParameterMap() {
// 先获得请求方式
String method = request.getMethod();
if (method.equalsIgnoreCase("post")) {
// post请求
try {
// 处理post乱码
request.setCharacterEncoding("utf-8");
return request.getParameterMap();
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
}
} else if (method.equalsIgnoreCase("get")) {
// get请求
Map<String, String[]> parameterMap = request.getParameterMap();
if (!hasEncode) { // 确保get手动编码逻辑只运行一次
for (String parameterName : parameterMap.keySet()) {
String[] values = parameterMap.get(parameterName);
if (values != null) {
for (int i = 0; i < values.length; i++) {
try {
// 处理get乱码
values[i] = new String(values[i].getBytes("ISO-8859-1"), "utf-8");
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
}
}
}
}
hasEncode = true;
}
return parameterMap;
}
return super.getParameterMap();
}
@Override
public String getParameter(String name) {
Map<String, String[]> parameterMap = getParameterMap
be11
();
String[] values = parameterMap.get(name);
if (values == null) {
return null;
}
return values[0]; // 取回参数的第一个值
}
@Override
public String[] getParameterValues(String name) {
Map<String, String[]> parameterMap = getParameterMap();
String[] values = parameterMap.get(name);
return values;
}
}web.xml
<?xml version="1.0" encoding="UTF-8"?> <web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" id="WebApp_ID" version="2.5"> <display-name>Hibernate_crm</display-name> <welcome-file-list> <welcome-file>index.html</welcome-file> <welcome-file>index.htm</welcome-file> <welcome-file>index.jsp</welcome-file> <welcome-file>default.html</welcome-file> <welcome-file>default.htm</welcome-file> <welcome-file>default.jsp</welcome-file> </welcome-file-list> <filter> <description></description> <display-name>GenericEncodingFilter</display-name> <filter-name>GenericEncodingFilter</filter-name> <filter-class>cn.itheima.web.filter.GenericEncodingFilter</filter-class> </filter> <filter-mapping> <filter-name>GenericEncodingFilter</filter-name> <url-pattern>/*</url-pattern> </filter-mapping> <servlet> <description></description> <display-name>AddCustomerServlet</display-name> <servlet-name>AddCustomerServlet</servlet-name> <servlet-class>cn.itheima.web.AddCustomerServlet</servlet-class> </servlet> <servlet-mapping> <servlet-name>AddCustomerServlet</servlet-name> <url-pattern>/addCustomer</url-pattern> </servlet-mapping> </web-app>
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