Struts1 中提交中文表單到ActionForm後出現亂碼問題的原因及處理方法，struts1actionform
問題：
在你所有頁面設置的編碼都是utf-8的情況下仍然會出現中文亂碼現象。
一、亂碼出現原因
由於Struts框架直接把表單數據發送給了ActionForm，所以這裡面沒有對HttpRequestServlet進行SetCharacterEncoding,所以默認是按照ISO-8859-1。
二、解決辦法
方法 ： 就是在表單提交到ActionForm之前對request進行編碼,寫一個過濾器，對所有請求進行過濾
方式一：直接在過濾器中指定編碼格式
MyFilter.java
![]()
1 public class MyFilter extends HttpServlet implements Filter {
2 private static final long serialVersionUID = 1L;
3
4
5 public void doFilter(ServletRequest arg0, ServletResponse arg1, FilterChain arg2) throws java.io.IOException, javax.servlet.ServletException {
6 // TODO Auto-generated method stub
7 arg0.setCharacterEncoding("utf-8"); //設置接收編碼
8 arg1.setContentType("text/html;charset=utf-8");
9 arg2.doFilter(arg0, arg1); //必須
10
11 }
12
13
14 public void init(FilterConfig arg0) throws javax.servlet.ServletException {
15 // TODO Auto-generated method stub
16 }
17
18 }
View Code
在web.xml中添加
![]()
1 <filter>
2 <filter-name>MyFilter</filter-name>
3 <filter-class>com.xidian.filter.MyFilter</filter-class>
4 </filter>
5 <filter-mapping>
6 <filter-name>MyFilter</filter-name>
7 <url-pattern>/*</url-pattern>
8 </filter-mapping>
View Code
方式二：在web.xml中指定編碼格式
MyFilter.java
![]()
1 package com.xidian.filter;
2
3 import javax.servlet.Filter;
4 import javax.servlet.FilterChain;
5 import javax.servlet.FilterConfig;
6 import javax.servlet.ServletRequest;
7 import javax.servlet.ServletResponse;
8 import javax.servlet.annotation.WebServlet;
9 import javax.servlet.http.HttpServlet;
10
11 public class MyFilter extends HttpServlet implements Filter {
12 private static final long serialVersionUID = 1L;
13 private String encoding;
14
15 public void doFilter(ServletRequest arg0, ServletResponse arg1, FilterChain arg2) throws java.io.IOException, javax.servlet.ServletException {
16 // TODO Auto-generated method stub
17 arg0.setCharacterEncoding(encoding);
18 arg2.doFilter(arg0, arg1);
19 }
20
21 public void init(FilterConfig arg0) throws javax.servlet.ServletException {
22 // TODO Auto-generated method stub
23 encoding=arg0.getInitParameter("encoding");
24 }
25
26 }
View Code
在web.xml添加
![]()
1 <filter>
2 <filter-name>MyFilter</filter-name>
3 <filter-class>com.xidian.filter.MyFilter</filter-class>
4 <init-param>
5 <param-name>encoding</param-name>
6 <param-value>utf-8</param-value>
7 </init-param>
8 </filter>
9 <filter-mapping>
10 <filter-name>MyFilter</filter-name>
11 <url-pattern>/*</url-pattern>
12 </filter-mapping>
View Code
下面是struts2中中文亂碼的問題：
關於struts2中表單提交時，中文亂碼問題的解決
順帶再說下加上對輸入數據內容的過濾的情況：
再添加一個過濾程序：
SafeFilter.java
![]()
1 package com.xidian.filter;
2
3 import java.io.IOException;
4 import javax.servlet.Filter;
5 import javax.servlet.FilterChain;
6 import javax.servlet.FilterConfig;
7 import javax.servlet.ServletException;
8 import javax.servlet.ServletRequest;
9 import javax.servlet.ServletResponse;
10
11 public class SafeFilter implements Filter {
12 private String keywords[];
13
14 public void doFilter(ServletRequest request, ServletResponse response,
15 FilterChain chain) throws IOException, ServletException {
16 //這裡我們接收到用戶名
17 String name=request.getParameter("name");
18 request.setAttribute("err", "您不允許登錄<font color='red'>"+name+"</font>");
19 System.out.println("第二個過濾器："+name);
20 if(name!=null){
21 //判斷
22 for(String key:keywords){
23 if(key.equals(name)){
24 request.getRequestDispatcher("WEB-INF/ifo.jsp").forward(request, response);
25 return;
26 }
27 }
28
29 }
30 chain.doFilter(request, response);
31 }
32
33
34 public void init(FilterConfig filterConfig) throws ServletException {
35 keywords=filterConfig.getInitParameter("keywords").split(";");
36
37 }
38
39 }
View Code
web.xml的配置
![]()
1 <!-- 部署過濾器的順序就是執行的順序 -->
2 <filter>
3 <filter-name>MyFilter</filter-name>
4 <filter-class>com.xidian.filter.MyFilter</filter-class>
5 <init-param>
6 <param-name>encoding</param-name>
7 <param-value>utf-8</param-value>
8 </init-param>
9 </filter>
10
11 <filter>
12 <filter-name>SafeFilter</filter-name>
13 <filter-class>com.xidian.filter.SafeFilter</filter-class>
14 <init-param>
15 <param-name>keywords</param-name>
16 <param-value>拉登;小明;鳳姐</param-value>
17 </init-param>
18 </filter>
View Code
