1.@RequestMapping 用法
SpringMVC中,@RequestMapping用来处理请求,比如XXX.do
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@RequestMapping("/aaa")
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public class ccccontroller{
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@RequestMapping("/bbb")
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public String xxx()
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{
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return;
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}
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}
2：接收带参数的请求,接收用户请求参数 值
请求1： /test/start.do?name=zhangsan
请求2： /test/start/zhangsan.do
在请求2中 将参数作为请求URL传递,感觉用的不习惯
采用 URL模板
@RequestMapping("/start/{name}")//这个name 随便 啥都可以
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public String start(@PathVariable("name") string name){
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return ;
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}
包含多个 @RequestMapping ("/start/{name}/{age}")
3不同请求方法,用不同处理方法 get post
@RequestMapping (value="/start" ,method=RequestMethod.GET)//处理post 就换成 POST
另外,如果Servlet想要做到/test/start/zhangsan.do这种请求的话
需要 URL 重写才能做到，或者用 /start/* 作为 Servlet 请求控制器，在其中进行截取和判断。
第二种方法：自己写一个 URL 重写的 Filter
第三种方法：使用现成的 urlrewriter 工具
第四种方法：使用 Web 服务器的 URL 重写功能
Servlet中用Filter重写示例
web.xml中:
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<?xml version="1.0" encoding="UTF-8"?>
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<web-app version="2.4"
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xmlns=" http://java.sun.com/xml/ns/j2ee"
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xmlns:xsi=" http://www.w3.org/2001/XMLSchema-instance"
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xsi:schemaLocation=" http://java.sun.com/xml/ns/j2ee
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http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">
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<servlet>
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<servlet-name>Action</servlet-name>
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<servlet-class>com.bao.servlet.Action</servlet-class>
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</servlet>
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<servlet-mapping>
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<servlet-name>Action</servlet-name>
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<url-pattern>/Action</url-pattern>
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</servlet-mapping>
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<filter>
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<filter-name>action_name</filter-name>
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<filter-class>com.bao.filter.ActionNameFilter</filter-class>
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<init-param>
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<param-name>pattern</param-name>
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<param-value>/action/[^/]+</param-value>
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</init-param>
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</filter>
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<filter-mapping>
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<filter-name>action_name</filter-name>
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<url-pattern>/action/*</url-pattern>
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</filter-mapping>
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</web-app>
Filter中:
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private Matcher matcher;
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Matcher 不是线程安全的，所以这样写是错误的。改正一下：
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package com.bao.filter;
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import java.io.IOException;
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import java.util.regex.Matcher;
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import java.util.regex.Pattern;
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import javax.servlet.Filter;
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import javax.servlet.FilterChain;
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import javax.servlet.FilterConfig;
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import javax.servlet.ServletException;
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import javax.servlet.ServletRequest;
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import javax.servlet.ServletResponse;
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import javax.servlet.http.HttpServletRequest;
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public class ActionNameFilter implements Filter {
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private Pattern pattern;
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public void init(FilterConfig config) throws ServletException {
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String p = config.getInitParameter("pattern");
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pattern= Pattern.compile(p);
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}
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public void doFilter(ServletRequest req, ServletResponse res,
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FilterChain chain) throws IOException, ServletException {
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HttpServletRequest request = (HttpServletRequest)req;
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String context = request.getContextPath();
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String uri = request.getRequestURI();
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String path = uri.substring(context.length());
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if(pattern.matcher(path).matches()) {
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int idx = uri.lastIndexOf("/");
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String name = uri.substring(idx + 1);
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request.getRequestDispatcher("/Action?username=" + name).forward(req, res);
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} else {
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chain.doFilter(req, res);
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}
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}
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public void destroy() {
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}
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}
.@RequestMapping 用法,布布扣,bubuko.com
.@RequestMapping 用法
原文：http://blog.csdn.net/yongweb/article/details/24315173
