jsp 頁面傳值 到後臺 中文亂碼解決方法
例jsp中傳入的引數名字:shortname
情況(1):和方法2針對的情況一樣 如果是第3種情況的話就不適用了
java後臺程式碼這樣處理 String str = new String(shortname.getBytes("iso-8859-1"),"UTF-8") ; 不需要對jsp頁面的引數編碼
情況(2)針對使用Ajax get請求時引數不附加在url後:如 $.ajax{type:get,data:shortname:shortname...... }
jsp頁面引數這樣處理 encodeURIComponent(shortname)
java後臺程式碼這樣處理 String str = URLDecoder.decode(shortname, "utf-8");
情況(3)get 提交針對於引數附加在url後面:如:url:/ajax/a.action?shortname=shortname
jsp頁面引數這樣處理 encodeURI((encodeURI(shortname))) 這樣也可以encodeURI(shortname) 。。。。。
java後臺程式碼這樣處理 String str = URLDecoder.decode(shortname, "utf-8");
針對第2和第3種情況 如果前臺還需要這個引數shortname 一直在前後臺傳來傳去的話,要注意下 後臺傳到前臺時也要對這個引數shortname進行編碼:
URLEncoder.encode(URLEncoder.encode(shortname, "utf-8"), "utf-8") 還有就是情況2,3避免亂碼,可以改用post請求!
不過感覺最簡單的方法還是用過濾器了:過濾器類如下
web.xml中的配置加上下面幾句話就行了:package zz; 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; /** * Filter that sets the character encoding to be used in parsing the * incoming request */ public class SetCharacterEncodingFilter implements Filter { protected String encoding = null; protected FilterConfig filterConfig = null; public void destroy() {} public void init(FilterConfig filterConfig) throws ServletException { this.filterConfig = filterConfig; this.encoding = filterConfig.getInitParameter("encoding"); } /** * Select and set(if specified) the character encoding to be used to * interpret request parameters for this request */ public void doFilter(ServletRequest request,ServletResponse response, FilterChain chain) throws IOException,ServletException { request.setCharacterEncoding(encoding); response.setCharacterEncoding(encoding); chain.doFilter(request,response); } }
<filter>
<filter-name>SetCharacterEncoding</filter-name>
<filter-class>com.bigdata.financial.filter.SetCharacterEncodingFilter</filter-class>
<init-param>
<param-name>encoding</param-name>
<param-value>UTF-8</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>SetCharacterEncoding</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>