一、自定义的类（注意其中的属性，web.xml中的配置就是根据这个类的）
import org.springframework.web.filter.OncePerRequestFilter;
import javax.servlet.FilterChain;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.io.UnsupportedEncodingException;
import java.util.Iterator;
/**
* Filter - 编码格式转换
*/
public class EncodingConvertFilter extends OncePerRequestFilter {
/** 原编码格式：与web.xml文件中对应设置 */
private String fromEncoding = "ISO-8859-1";
/** 目标编码格式 ：与web.xml文件中对应设置*/
private String toEncoding = "UTF-8";
@SuppressWarnings("unchecked")
@Override
protected void doFilterInternal(HttpServletRequest request, HttpServletResponse response, FilterChain filterChain) throws ServletException, IOException {
if (request.getMethod().equalsIgnoreCase("GET")) {
for (Iterator<String[]> iterator = request.getParameterMap().values().iterator(); iterator.hasNext();) {
String[] parames = iterator.next();
for (int i = 0; i < parames.length; i++) {
try {
parames[i] = new String(parames[i].getBytes(fromEncoding), toEncoding);
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
}
}
}
}
filterChain.doFilter(request, response);
}
/**
* 获取原编码格式
* @return 原编码格式
*/
public String getFromEncoding() {
return fromEncoding;
}
/**
* 设置原编码格式
* @param fromEncoding
* 原编码格式
*/
public void setFromEncoding(String fromEncoding) {
this.fromEncoding = fromEncoding;
}
/**
* 获取目标编码格式
* @return 目标编码格式
*/
public String getToEncoding() {
return toEncoding;
}
/**
* 设置目标编码格式
* @param toEncoding
* 目标编码格式
*/
public void setToEncoding(String toEncoding) {
this.toEncoding = toEncoding;
}
}
二、web.xml
<!--springmvc自定的过滤post-->
<filter>
<filter-name>encodingFilter</filter-name>
<filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
<!-- 其中encoding用来设置编码格式，forceEncoding用来设置是否理会 request.getCharacterEncoding()方法，设置为true则强制覆盖之前的编码格式 -->
<init-param>
<param-name>encoding</param-name>
<param-value>UTF-8</param-value>
</init-param>
<init-param>
<param-name>forceEncoding</param-name>
<param-value>true</param-value>
</init-param>
</filter>
<!--自定义过滤get请求，如果tomcat中server.xml文件中配置了URIEncoding="UTF-8",可以不需要-->
<filter>
<filter-name>encodingConvertFilter</filter-name>
<filter-class>home.xxx.filter.EncodingConvertFilter</filter-class>
<init-param>
<param-name>fromEncoding</param-name>
<param-value>ISO-8859-1</param-value>
</init-param>
<init-param>
<param-name>toEncoding</param-name>
<param-value>UTF-8</param-value>
</init-param>
</filter>
<filter-mapping>