標籤：中文亂碼 編碼 tomcat 字元集設定 get與post亂碼處理
處理伺服器亂碼的四種方式
1.jsp編碼設定錯誤導致亂碼在JSP檔案中使用page命令指定響應結果的MIME類型，如<%@ page language="java" contentType="text/html;charset=utf-8" %>
2.在接受request參數時進行，response響應時設定編碼格式request.setCharacterEncoding( "UTF-8" )response.setCharacterEncoding( "UTF-8")
3.使用String設定字元集的方式處理亂碼indexString = java.net.URLDecoder.decode(indexString , "UTF-8");indexString = new String(indexString.getBytes("UTF-8"), "UTF-8");
4.使用自訂過濾器
package com.cdu.yige.filter;
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 EncodingFilter implements Filter {
private String charset = "UTF-8";
@Override
public void destroy() {}
@Override
public void doFilter(ServletRequest request, ServletResponse response,
FilterChain chain) throws IOException, ServletException {
HttpServletRequest req = (HttpServletRequest) request;
if(req.getMethod().equalsIgnoreCase("GET")) {
if(!(req instanceof GetRequest)) {
req = new GetRequest(req, charset);//處理get請求編碼
}
} else {
req.setCharacterEncoding(charset);//處理post請求編碼
}
chain.doFilter(req, response);
}
@Override
public void init(FilterConfig fConfig) throws ServletException {
String charset = fConfig.getInitParameter("charset");
if(charset != null && !charset.isEmpty()) {
this.charset = charset;
}
}
}
對get方式的過濾package com.cdu.yige.filter;
import java.io.UnsupportedEncodingException;
import java.util.Map;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletRequestWrapper;
/**
* 對GET請求參數加以處理！
* @author lucien
*
*/
public class GetRequest extends HttpServletRequestWrapper {
private HttpServletRequest request;
private String charset;
public GetRequest(HttpServletRequest request, String charset) {
super(request);
this.request = request;
this.charset = charset;
}
@Override
public String getParameter(String name) {
// 擷取參數
String value = request.getParameter(name);
if(value == null) return null;//如果為null，直接返回null
try {
// 對參數進行編碼處理後返回
return new String(value.getBytes("ISO-8859-1"), charset);
} catch (UnsupportedEncodingException e) {
throw new RuntimeException(e);
}
}
@SuppressWarnings({ "unchecked", "rawtypes" })
@Override
public Map getParameterMap() {
Map<String,String[]> map = request.getParameterMap();
if(map == null) return map;
// 遍曆map，對每個值進行編碼處理
for(String key : map.keySet()) {
String[] values = map.get(key);
for(int i = 0; i < values.length; i++) {
try {
values[i] = new String(values[i].getBytes("ISO-8859-1"), charset);
} catch (UnsupportedEncodingException e) {
throw new RuntimeException(e);
}
}
}
// 處理後返回
return map;
}
@Override
public String[] getParameterValues(String name) {
String[] values = super.getParameterValues(name);
for(int i = 0; i < values.length; i++) {
try {
values[i] = new String(values[i].getBytes("ISO-8859-1"), charset);
} catch (UnsupportedEncodingException e) {
throw new RuntimeException(e);
}
}
return values;
}
}
過濾器web.xml檔案配置 < filter> <filter-name >EncodingFilter </filter-name > <filter-class >com.cdu.yige.filter.EncodingFilter </filter-class > </filter > <filter-mapping > <filter-name >EncodingFilter </filter-name > <url-pattern >/* </url-pattern > </filter-mapping >
5.修改tomcat伺服器server.xml的字元集配置，對get方式和post方式的亂碼終極處理。 <Connector port="8080" protocol="HTTP/1.1"
connectionTimeout="20000"
URIEncoding="UTF-8"
useBodyEncodingForURI="true"
redirectPort="8443" />
6.get請求方式和post請求方式產生的亂碼處理方式略有不同，請自行百度參看。其他方法參看：http://wenku.baidu.com/view/f27afc4bfe4733687e21aa6c.html http://blog.csdn.net/pcxbest/article/details/24418303 http://my.oschina.net/u/267081/blog/137383 http://huifeideyu.blog.51cto.com/6764601/1176432 http://blog.163.com/shuangyuehuixin%40126/blog/static/16276137420113242322311/ http://www.iteye.com/topic/251743
Java WEB應用中文亂碼處理總結
