解决springmvc项目中使用过滤器来解决请求方式为post时出现乱码的问题

 request.setCharacterEncoding("utf-8");
  String strId = request.getParameter("id");
  String strName = request.getParameter("name");
  String strSex = request.getParameter("sex");

<!--注册声明过滤器-->
 <filter>
  <filter-name>characterEncodingFilter</filter-name>
  <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
<!--指定项目的编码格式-->
  <init-param>
   <param-name>encoding</param-name>
   <param-value>utf-8</param-value>
  </init-param>
<!--强制请求对象的编码格式 使用字符集encoding-->
  <init-param>
   <param-name>forceRequestEncoding</param-name>
   <param-value>true</param-value>
  </init-param>
<!--强制响应对象使用encoding的字符集编码-->
  <init-param>
   <param-name>forceResponseEncoding</param-name>
   <param-value>true</param-value>
  </init-param>
 </filter>
 
 <filter-mapping>
<!--强制所有请求先通过过滤器处理-->
  <filter-name>characterEncodingFilter</filter-name>
  <url-pattern>/*</url-pattern>
 </filter-mapping>

public class CharacterEncodingFilter extends OncePerRequestFilter {
 @Nullable
 private String encoding;
 private boolean forceRequestEncoding;
 private boolean forceResponseEncoding;
 
 public CharacterEncodingFilter() {
  this.forceRequestEncoding = false;
  this.forceResponseEncoding = false;
 }
 
 public CharacterEncodingFilter(String encoding) {
  this(encoding, false);
 }
 
 public CharacterEncodingFilter(String encoding, boolean forceEncoding) {
  this(encoding, forceEncoding, forceEncoding);
 }
 
 public CharacterEncodingFilter(String encoding, boolean forceRequestEncoding, boolean forceResponseEncoding) {
  this.forceRequestEncoding = false;
  this.forceResponseEncoding = false;
  Assert.hasLength(encoding, "Encoding must not be empty");
  this.encoding = encoding;
  this.forceRequestEncoding = forceRequestEncoding;
  this.forceResponseEncoding = forceResponseEncoding;
 }