一、乱码的解决-通过过滤器来解决乱码
- Spring MVC中提供了org.springframework.web.filter.CharacterEncodingFilter来解决POST乱码
<filter>
<filter-name>CharacterEncoding</filter-name>
<filter-class>
org.springframework.web.filter.CharacterEncodingFilter</filter-class>
<init-param>
<param-name>encoding</param-name>
<param-value>utf-8</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>CharacterEncoding</filter-name>
<url-pattern>
/*</url-pattern>
</filter-mapping>
@RequestMapping(value="/hello")
public String user(@RequestParam("uname") Stringuname, ModelMap model)
throws UnsupportedEncodingException {
model.addAttribute("name",
uname);
return "index.jsp";
}
model.addAttribute("name", uname);直接使用即可。 |
- 如果是GET方式乱码
修改Tomcat的 server.xml配置文件解决 | |
自定义乱码解决的过滤器
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注意:GET请求的乱码解决是通过
value = new String(value.getBytes("iso-8859-1"), encoding);
POST请求则是通过
// 设置request编码
httpRequest.setCharacterEncoding(encoding);
// 设置response编码
httpResponse.setContentType("text/html;charset=" + encoding);
@RequestMapping(value="/hello")
public String user(@RequestParam(
"uname") String uname, ModelMap model,
HttpServletRequest request)
throws UnsupportedEncodingException {
model.addAttribute("name",
request.getAttribute("uname"));
return "index.jsp";
}
<filter>
<filter-name>CharacterEncoding</filter-name>
<filter-class>
com.liujie.filter.CharacterEncodingFilter</filter-class>
<init-param>
<param-name>encoding</param-name>
<param-value>utf-8</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>CharacterEncoding</filter-name>
<url-pattern>
*.do</url-pattern>
</filter-mapping>
注意:<url-pattern>
*.do</url-pattern>,不能够拦截
/*。
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二、RESTful风格的URL
优点:轻量级、安全、效率高
//http://localhost:8080/springmvc/1/123/hello.do
@RequestMapping(value="/{
id}/{
uid}/hello")
public String user(@PathVariable("
id") int id, @PathVariable("
uid") int uid) {
System.out.println(id);
System.out.println(uid);
return "/index.jsp";
}
@RequestMapping(value="/{
id}/{
uid}/hello")
public String user(@PathVariable int
id, @PathVariable int
uid)
三、同一个Controller通过参数来到达不同的处理方法-不重要
提交URL:
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处理代码:
@Controller
@RequestMapping("/hello")
public class HelloController {
//http://localhost:8080/springmvc/hello.do?method=add
@RequestMapping(params="method=add", method=RequestMethod.GET)
public String add() {
System.out.println("add");
return "redirect:/index.jsp";
}
@RequestMapping(params="method=update", method=RequestMethod.GET)
public String update() {
System.out.println("update");
return "redirect:/index.jsp";
}
@RequestMapping(params="method=delete", method=RequestMethod.GET)
public String delete() {
System.out.println("delete");
return "redirect:/index.jsp";
}
}
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