SSH 之 Struts2篇

1、新建Deployment Web Project，结构目录如下

2、导入struts2需要的包到WEB-INF目录的lib下面，右键包，选择build path，新增jbean：

3、配置web.xml引入struts2，配置过滤器filter，加载struts2核心类；

<?xml version="1.0" encoding="ISO-8859-1"?>

<web-app version="2.4" 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-app_2_4.xsd">

<filter-name>struts2</filter-name>

<filter-class>

org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter

</filter-class>

</filter>

<filter-mapping>

<filter-name>struts2</filter-name>

<url-pattern>/*</url-pattern>

</filter-mapping>

</web-app>

4、struts.xml配置文件，放到classes根目录下，核心类会到classes根目录下自动扫描

<?xml version="1.0" encoding="UTF-8" ?>

<!DOCTYPE struts PUBLIC

"-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"

"http://struts.apache.org/dtds/struts-2.0.dtd">

<result name="success">page/user/users.jsp</result>

<result name="error">page/user/usere.jsp</result>

</action>

</package>

</struts>

5、Action类

package com.iobs.manager.user;

import java.io.UnsupportedEncodingException;

public class IobsUser {

private String userName;

public String execute() throws UnsupportedEncodingException{

return "success";

}

public String getUserName() {

return userName;

}

public void setUserName(String userName) {

this.userName = userName;

}

6、JSP页面

首先来个登陆页面：

代码如下：

<%@ page language="java" contentType="text/html; charset=UTF-8"

pageEncoding="UTF-8"%>

<%@taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>

<c:set var="path" value="${pageContext.request.contextPath }"></c:set>

<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">

<html>

<body>

<h1>csp-iobs-manager</h1>

${path }

</form>

</body>

</html>

注意：

1、红色部分如果要引用<c:>标签，需要导入jstl.jar包

2、form的请求为get请求，也可以改成post请求，使用表单提交，参数不会再uri中显现

再写个成功后调整页面

<body>

<h1>${userName}</h1>

</body>

最后输入“张三”点击提交

7、乱码问题

1）发送get请求为乱码，只需修改，web容器配置，tomcat修改server.xml，新增URIEncoding为UTF-8

<Connector URIEncoding="UTF-8" port="8080" protocol="HTTP/1.1"

connectionTimeout="20000" redirectPort="8443" />

2）发送post请求为乱码，需要统一编码，spring体统相关的包，但是我这里自己写了一个filter来过滤字符集

struts统一编码，在struts.xml中新增配置

新增拦截类

package com.iobs.manager.util;

import java.io.IOException;

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.HttpServletResponse;

public class UrlFilter implements Filter {

public final static String DEFAULT_URI_ENCODE = "UTF-8";

private String encode = null;

@Override

public void init(FilterConfig config) throws ServletException {

this.encode = config.getInitParameter("DEFAULT_URI_ENCODE");

this.encode = DEFAULT_URI_ENCODE;

if(this.encode == null) {

this.encode = DEFAULT_URI_ENCODE;

}

@Override

public void doFilter(ServletRequest request, ServletResponse response,

FilterChain chain) throws IOException, ServletException {

HttpServletRequest req = (HttpServletRequest) request;

HttpServletResponse resp = (HttpServletResponse) response;

req.setCharacterEncoding("UTF-8");

resp.setContentType("text/html; charset=UTF-8");

resp.setCharacterEncoding("UTF-8");

chain.doFilter(req, resp);

}

@Override

public void destroy() {

}

web.xml新增过滤

<filter-name>urlFilter</filter-name>

<filter-class>com.iobs.manager.util.UrlFilter</filter-class>

<init-param>

<param-name>DEFAULT_URI_ENCODE</param-name>

<param-value>UTF-8</param-value>

</init-param>

</filter>

<filter-mapping>

<filter-name>urlFilter</filter-name>

<url-pattern>/*</url-pattern>

</filter-mapping>

特别注意，这个过滤器一定要放在struts的filter前面，

放在后面会无效，具体可查servlet的web.xml加载优先级

posted on 2016-11-11 16:20 直到没朋友阅读(104) 评论(0) 收藏举报