java過濾器亂碼

⑴ 怎麼使用過濾器解決中文亂碼

首先有web.xml中配置
<filter>
<filter-name>EncodingFilter</filter-name>
<filter-class>net.tom.servlet.filter.EncodingFilter</filter-class>
</filter>

<filter-mapping>
<filter-name>EncodingFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
//net.tom.servlet.filter.EncodingFilter是其包和類所在的地址

我給你的DEMO是統一設為utf-8

你可以改一下就可以了

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;
/********************
* 過濾編碼.用於把編碼統一為:utf-8
* @author jiangqh
*
*/
public class EncodingFilter implements Filter {

public EncodingFilter() {
}

public void destroy() {

}
/****************
* 過濾方法
*/
public void doFilter(ServletRequest request, ServletResponse response,
FilterChain chain) throws IOException, ServletException {
request.setCharacterEncoding("utf-8");
chain.doFilter(request, response);

}

public void init(FilterConfig arg0) throws ServletException {

}

}

⑵ jsp用過濾器解決中文亂碼問題的方法

定義一過濾器，實現Filtter介面
public
class
EncodingFilter
implements
Filter
{
@Override
public
void
destroy()
{
//
TODO
Auto-generated
method
stub
}
@Override
public
void
doFilter(ServletRequest
req,
ServletResponse
resp,
FilterChain
chain)
throws
IOException,
ServletException
{
//
TODO
Auto-generated
method
stub
HttpServletRequest
request=(HttpServletRequest)req;
HttpServletResponse
response=(HttpServletResponse)resp;
request.setCharacterEncoding("UTF-8");
response.setContentType("text/html;charset=UTF-8");
chain.doFilter(req,
resp);
}
@Override
public
void
init(FilterConfig
filterConfig)
throws
ServletException
{
//
TODO
Auto-generated
method
stub
}
}
web.xml文件中，配置過濾器
<filter>
<filter-name>EncodingFilter</filter-name>
<filter-class>pers.filter.EncodingFilter</filter-class>
</filter>
<filter-mapping>
<filter-name>EncodingFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
以上這篇jsp用過濾器解決中文亂碼問題的方法就是小編分享給大家的全部內容了，希望能給大家一個參考，也希望大家多多支持腳本之家。

⑶ 在java中，使用過濾器編碼過濾亂碼時，過濾器的編碼怎麼寫

public void doFilter(ServletRequest srequest, ServletResponse sresponse,
FilterChain chain) throws IOException, ServletException {
if (null != encoding) {
HttpServletRequest request = (HttpServletRequest)srequest;
HttpServletResponse response = (HttpServletResponse)sresponse;

// 對請求進行編碼設置
request.setCharacterEncoding(encoding); //把請求用指定的方法編碼
response.setContentType("text/html");
response.setCharacterEncoding(encoding); //把返回響應指定 編碼方式
System.out.println("------------過濾編碼-------------" + encoding);
}
// 把處理許可權交給下一個過濾器
chain.doFilter(srequest, sresponse);
}//這是核心方法
正好項目中有用到

⑷ java 字元串中亂碼過濾

new String(str.getBytes(),"GBK");
用這方法，把亂碼正確顯示。當然編碼要自己設

⑸ Java 亂碼問題 怎樣寫一個過濾器文件來處理亂碼問題啊

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;public class PageEncodeFilter implements Filter { private FilterConfig fConfig;
private String encode;
public void destroy() {
this.fConfig = null;
this.encode = null;
} public void doFilter(ServletRequest arg0, ServletResponse arg1,
FilterChain fc) throws IOException, ServletException {
HttpServletRequest hsr = (HttpServletRequest)arg0;
hsr.setCharacterEncoding(this.encode);
fc.doFilter(arg0, arg1);
} public void init(FilterConfig fConfig) throws ServletException {
this.fConfig = fConfig;
this.encode = this.fConfig.getInitParameter("encode");
}}然後到.xml 下配置 <filter>
<filter-name>PageEncodeFilter</filter-name>
<filter-class>com.popedom.util.PageEncodeFilter</filter-class>
<init-param>
<param-name>encode</param-name>
<param-value>gb2312</param-value>
</init-param>
</filter>

<filter-mapping>
<filter-name>PageEncodeFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>

⑹ java filter 過濾器中文亂碼 怎麼解決啊

1、首先編寫一個Java類的代碼。操作步驟：
(1)在myeclipse中新建一個java類，

(2)單擊「Add」按鈕，在彈出來的對話框中「選擇介面」文本框中輸入Filter，
並選擇匹配好的類型javax.servlet
(3)單擊「OK」按鈕返回"New Java Class"對話，然後單擊「Finish」按鈕，就可以看到創建的過濾器框架:
過濾器類：Encoding.java,代碼如下:
package com;
import java.io.IOException;
import javax.servlet.*;
public class Encoding implements Filter {
protected String encoding=null;
protected FilterConfig config;
public void destroy() {
// TODO Auto-generated method stub
}
public void doFilter(ServletRequest request, ServletResponse response,
FilterChain chain) throws IOException, ServletException {
if(request.getCharacterEncoding()==null){
//得倒指定的編碼
String encode=getEncoding();
if(encode!=null){
//設置request的編碼
request.setCharacterEncoding(encode);
response.setCharacterEncoding(encode);
}
}
chain.doFilter(request, response);
}
public void init(FilterConfig filterConfig) throws ServletException {
this.config=filterConfig; //得到web.xml中的配置編碼
this.encoding=filterConfig.getInitParameter("Encoding");
}
protected String getEncoding(){
return encoding;

}
}
2、在web.xml文件寫入以下代碼：
<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.5"
xmlns="http://java.sun.com/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee
http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">
<display-name></display-name>
<filter> <!-- 控制編碼 -->
<filter-name>EncodingFilter</filter-name>
<filter-class>com.Encoding</filter-class>
<init-param> <!-- 初始化參數 -->
<param-name>Encoding</param-name>
<param-value>GB2312</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>EncodingFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
</web-app>

⑺ 用過濾器如何解決javaWeb中中文亂碼

apache-tomcat-6.0.26\webapps\examples\WEB-INF\classes\filters

有例子

⑻ java web 亂碼過濾器 filter 有什麼作用

注意問題：在學慣用selvert的過濾器filter處理中文亂碼時，在filter配置初始化時用了utf-8處理中文版亂碼，而在提交的jsp頁面中卻權用了gbk。雖然兩種都可以出來中文亂碼，但是卻造成了處理亂碼的格式不一致。所以編譯出錯。

⑼ JSP過濾器過濾中文亂碼

response.setContentType("text/html;charset=gbk");試試、過濾器有時候也不管用的。你要的話，請追問。。

⑽ 過濾器解決JavaWeb裡面的中文亂碼問題為什麼失效

失效，看看你的過濾器配置文件是否修改了，或者有沒有其他的過濾器覆蓋了。