public String getstr(String str)
{
try{
String temp_p = str;
byte[] temp_t = temp_p.getBytes("ISO8859-1");
String temp = new String(temp_t);
return temp;
}catch(Exception e)
{
}
return "null";
}
{
try{
String temp_p = str;
byte[] temp_t = temp_p.getBytes("ISO8859-1");
String temp = new String(temp_t);
return temp;
}catch(Exception e)
{
}
return "null";
}
这样可以使从后台来的数据以GB2312显示
如果还有问题，把取出来的数据利用下面的函数进行编码转换，这段代码写在<%!%>之间，放在<html>之前
转码代码:
private String codeString(String s){
String str=s;
String temp=""; try{
byte[] temp_t=str.getBytes("ISO-8859-1");
temp=new String(temp_t,"GB2312");
log.info("codeString = " + str);
return temp;
}
catch(Exception e)
{
log.error("e codeString = " + str);
return temp;
}
}
http://community.csdn.net/Expert/topic/3355/3355594.xml?temp=.2952692
帖子的名称为 oracle816的字符集.
第二步:如果数据库的内容正常的只是显示的时候出现乱码:
ok: 出现乱码的问题有下面三种情况:
first: request引起的,如果是的话,加入filter处理,办法:
--------------------------------------------------------------
在web.xml中加入
<filter>
<filter-name>Set Character Encoding</filter-name>
<filter-class>web.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>
对应的java程序:/**
* <p>Title: test and study</p>
* <p>Description: </p>
* <p>Copyright: Copyright (c) 2004</p>
* <p>Company: sdzs</p>
* @author meconsea
* @version 1.0
*/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.UnavailableException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
public class SetCharacterEncodingFilter implements Filter{ public SetCharacterEncodingFilter() {
} protected String encoding = null;
protected FilterConfig filterConfig = null;
protected boolean ignore = true; public void destroy(){
this.encoding = null;
this.filterConfig = null;
} public void doFilter(ServletRequest request,ServletResponse response,FilterChain chain)throws IOException,ServletException{
if(ignore || request.getCharacterEncoding() == null){
encoding = selectEncoding(request);
if(encoding != null){
request.setCharacterEncoding(encoding);
}
}
chain.doFilter(request,response);
} public void init(FilterConfig filterConfig) throws ServletException {
this.filterConfig = filterConfig;
this.encoding = filterConfig.getInitParameter("encoding");
String value = filterConfig.getInitParameter("ignore");
if(value == null){
ignore = true;
} else if(value.equalsIgnoreCase("true")){
ignore = true;
} else if(value.equalsIgnoreCase("yes")){
ignore = true;
} else{
ignore = false;
}
} protected String selectEncoding(ServletRequest request){
return this.encoding;
}}在jsp页面上加入:
<%@ page contentType="text/html; charset=gbk" %>
<META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=gbk">
____________________________________________________________________________________
second: 写入数据库的时候是乱码(chinese --->unicode ):解决办法:
public static String gbToUn(String aNewStringIn) throws Exception {
String stringOut = null;
if(aNewStringIn == null || (aNewStringIn.trim()).equals("")) {
return aNewStringIn ;
}
byte[] b = aNewStringIn.getBytes("GBK") ;
stringOut = new String(b , "ISO8859-1") ;
return stringOut ;
}third 从数据库读取到页面unicode -- >chinese
public static String unToGb(String str){
String gbStr = null;
if((str == null)||(str.trim().equals("")){
return str;
}
byte[] b = str.getBytes("ISO-8859-1");
gbStr = new String(b,"GBK");
return gbStr;
}一切ok!