Solution to garbled characters in java

For Java, since the default encoding method is UNICODE, use Chinese It is also easy to cause problems. The common solutions are:

String s2 = new String(s1.getBytes(“ISO-8859-1”),”GBK”);

1. UTF8 solves the JSP Chinese garbled problem

Recommended tutorial: "java learning"

Generally speaking, at the beginning of each page, add:

<%@ page language="java" contentType="text/html; charset=UTF-8"     pageEncoding="UTF-8"%>
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%>
<% request.setCharacterEncoding("UTF-8"); %>

◆charset=UTF-8 is used to specify the encoding method that JSP outputs to the client as "UTF-8";

◆pageEncoding="UTF-8", in order to allow the JSP engine to correctly decode JSP pages containing Chinese characters, which is very effective in LINUX;

◆request.setCharacterEncoding("UTF-8"); The request is encoded in Chinese.

Sometimes, this still cannot solve the problem, and you need to deal with it like this:

String msg = request.getParameter("message");  String str=new String(msg.getBytes("ISO-8859-1"),"UTF-8");  out.println(st);

2. Tomcat 5.5 Chinese garbled code

Just put the %TOMCAT installation directory%/ webapps\servlets -Examples\WEB-INF\classes\filters\SetCharacterEncodingFilter.class file is copied to your webapp directory/filters. If there is no filters directory, create one.

2) Add the following lines to your web.xml:

<filter>   
<filter-name>Set   Character   Encoding</filter-name>   
<filter-class>filters.SetCharacterEncodingFilter</filter-class>   
<init-param>   
<param-name>encoding</param-name>   
<param-value>GBK</param-value>   
</init-param>   
</filter>   
<filter-mapping>   
<filter-name>Set   Character   Encoding</filter-name>   
<url-pattern>/*</url-pattern>   
</filter-mapping>

3) Complete

2, get method solution

1 ) Open the server.xml file of tomcat, find the block, and add the following line:

  URIEncoding=”GBK”

The complete should be as follows:

<connector     
  port="80"   maxThreads="150"   minSpareThreads="25"   maxSpareThreads="75"   
  enableLookups="false"   redirectPort="8443"   acceptCount="100"   
  debug="0"   connectionTimeout="20000"     
  disableUploadTimeout="true"     
  URIEncoding="GBK"   
  />

2) Restart tomcat, everything is OK.

3. xmlHttpRequest Chinese problem

GBK encoding used for page jsp

code:

<%@ page contentType="text/html; charset=GBK"%>

javascript part

code:

function addFracasReport() {   
    var url="controler?actionId=0_06_03_01&actionFlag=0010";   
    var urlmsg="&reportId="+fracasReport1.textReportId.value;  //故障報告表編號   
           
    var xmlHttp=Common.createXMLHttpRequest();   
    xmlHttp.onreadystatechange = Common.getReadyStateHandler(xmlHttp, 
       eval("turnAnalyPage"));   
    xmlHttp.open("POST",url,true);   
    xmlHttp.setRequestHeader( " Content-Type " , " 
       application/x-www-form-urlencoded);   
    xmlHttp.send(urlmsg);          
}
#p#

The reportId obtained in the background java is garbled. I don’t know how to transfer it. The main reason is that I don’t know what encoding xmlHttp.send(urlmsg); will be in the future? I used java to transfer it later and tried several methods without success. Among them are:

Code:

public static String UTF_8ToGBK(String str) {   
        try {   
            return new String(str.getBytes("UTF-8"), "GBK");   
        } catch (Exception ex) {   
            return null;   
        }   
    }   
       
    public static String UTF8ToGBK(String str) {   
        try {   
            return new String(str.getBytes("UTF-16BE"), "GBK");   
        } catch (Exception ex) {   
            return null;   
        }   
    }   
       
    public static String GBK(String str) {   
        try {   
            return new String(str.getBytes("GBK"),"GBK");   
        } catch (Exception ex) {   
            return null;   
        }   
    }   
         public static String getStr(String str) {   
        try {   
            String temp_p = str;   
            String temp = new String(temp_p.getBytes("ISO8859_1"), "GBK");   
            temp = sqlStrchop(temp);   
            return temp;   
        } catch (Exception e) {   
            return null;   
        }   
    }

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