1、post方式提交中文亂碼處理
1、jsp頁面編碼設爲”UTF-8”
<%@ page language="java" import="java.util.*" pageEncodint="UTF-8"%>
2、form表單提交方式必須爲post,get方式提交spring編碼過濾器不起效
3、修改web.xml,增加編碼過濾器
<filter>
<filter-name>encodingFilter</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>
<init-param>
<param-name>forceEncoding</param-name>
<param-value>true</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>encodingFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
兩個參數的作用
1>、encoding
用來指定一個具體的字符集
2>、forceEncoding
Spring裏的字符過濾器CharacterEncodingFilter是針對請求的,forceEncoding=true意思是指無論客戶端請求是否包含了編碼,都用過濾器裏面的編碼來解析請求
2、get方式提交中文亂碼處理
上面的過濾器,過濾了所有請求。但還是有問題,最後發現是表單的問題,在表單中method默認是get,而以上過濾器只對post有效果,如果是get,需要修改 Tomcat根式目錄的 conf/server.xml文件中,找,在裏面加,URIEncoding解決了queryString中文問題
3、post和get可以同用一個過慮器處理
public class EncodingFilter implements Filter{
@Override
public void destroy() {
// TODO Auto-generated method stub
}
@Override
public void doFilter(ServletRequest request, ServletResponse response, FilterChain filterChain)
throws IOException, ServletException {
HttpServletRequest req = (HttpServletRequest) request;
HttpServletResponse res = (HttpServletResponse) response;
System.out.println("get 方法中文處理");
//處理響應編碼
res.setContentType("text/html,charset=utf-8");
//處理post請求的編碼
request.setCharacterEncoding("utf-8");
//若是get請求就使用裝飾類的方法獲取參數
if(req.getMethod().equals("GET")) {
HttpServletRequest newReq = new MyRequest(req);
/*
* 調包request 1. 自己定義的request的裝飾類 2. 在攔截通過時,使用我們自己定義request 3.
* 在Servlet中
* ,只有你調用request.getParameter(name)方法本質就是執行自己定義的request.getParameter
* (name)方法
*/
filterChain.doFilter(newReq, response);
}else {
filterChain.doFilter(request,response);
}
}
@Override
public void init(FilterConfig arg0) throws ServletException {
// TODO Auto-generated method stub
}
}
下面是引用的裝飾類
public class DecodingRequest extends HttpServletRequestWrapper {
private HttpServletRequest req;
public MyRequest(HttpServletRequest request) {
super(request);
this.req = request;
}
@Override
public String getParameter(String name) {
try {
name = new String(req.getParameter(name).getBytes("iso8859-1"),"utf-8");
} catch (UnsupportedEncodingException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return name;
}
}
web.xml中的配置
<filter>
<filter-name>encoding</filter-name>
<filter-class>com.hx.filter.EncodingFilter</filter-class>
<init-param>
<param-name>encoding</param-name>
<param-value>UTF-8</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>encoding</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
但是還存在一問題,
url訪問:http://zzy.tunnel.qydev.com/springmvc_demo/login/doLogin.do?name=國慶快樂
接收參數的方法:
@RequestMapping("/doLogin.do")
public ModelAndView doLogin(HttpServletRequest req,HttpServletResponse res,ModelMap map,String name) {
map.put("user", name);
return new ModelAndView("hello");
}
這個參數拿到的參數還是亂碼,歡迎您 国庆长å,需要第2步中的把uriEncoding=UTF-8‡
4、連接數據庫時的中文設置
url=”jdbc:mysql://localhost:3306/test?useUnicode=true&characterEncoding=UTF-8”;