Struts中Jsp中文乱码解决方案
我们以UTF-8编码格式为例，首先确保我们所编写的Jsp文件为UTF-8编码格式的文本文件（中文操作系统文本文件默认存储格式为GBK，这一点要注意），在jsp文件按开头注明<%@ page contentType="text/html;charset=UTF-8" language="java" %>, 以便使tomcat等web服务器正常识别。
我们可以采用filter方案。代码如下：
package heroking.etc;
import javax.servlet.*;
import java.io.IOException;
public class SetCharacterEncodingFilter implements Filter {
protected FilterConfig filterConfig;
protected String encodingName;
protected boolean enable;
public SetCharacterEncodingFilter() {
this.encodingName = "UTF-8";
this.enable = false;
}
public void init(FilterConfig filterConfig) throws ServletException {
this.filterConfig = filterConfig;
loadConfigParams();
}
private void loadConfigParams() {
//encoding
this.encodingName = this.filterConfig.getInitParameter("encoding");
//filter enable flag...
String strIgnoreFlag = this.filterConfig.getInitParameter("enable");
if (strIgnoreFlag.equalsIgnoreCase("true")) {
this.enable = true;
} else {
this.enable = false;
}
}
public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException {
if(this.enable) {
request.setCharacterEncoding(this.encodingName);
}
chain.doFilter(request, response);
}
public void destroy() {
}
}
在web.xml配置如下：
1，web.xml的头描述应该是2.3版本以上，
<!DOCTYPE web-app
PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
"http://java.sun.com/j2ee/dtds/web-app_2_3.dtd">
2，filter配置：
<filter>
<filter-name>UTF-8Filter</filter-name>
<display-name>UTF-8Filter</display-name>
<filter-class>heroking.etc.SetCharacterEncodingFilter</filter-class>
<init-param>
<param-name>encoding</param-name>
<param-value>UTF-8</param-value>
</init-param>
<init-param>
<param-name>enable</param-name>
<param-value>true</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>UTF-8Filter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
另外一种方案为struts框架服务的：
代码如下：
package heroking.etc;
import org.apache.struts.action.ActionServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
public class ActionServletUTF8Encoding extends ActionServlet {
protected void process(HttpServletRequest request, HttpServletResponse response) throws java.io.IOException, javax.servlet.ServletException {
//如果JSP用GBK，这里就用GBK吧！
request.setCharacterEncoding("UTF-8");
super.process(request, response);
}
}
在web.xml配置如下：
<servlet>
<servlet-name>action</servlet-name>
<servlet-class>heroking.etc.ActionServletUTF8Encoding</servlet-class>
<init-param>
<param-name>config</param-name>
<param-value>/WEB-INF/struts-config.xml</param-value>
</init-param>
<init-param>
<param-name>debug</param-name>
<param-value>2</param-value>
</init-param>
<init-param>
<param-name>detail</param-name>
<param-value>2</param-value>
</init-param>
<load-on-startup>2</load-on-startup>
</servlet>
