REST風格中，中文編碼設置，轉發到jsp的PUT/DELETE請求轉換回POST請求，POST請求向PUT/DELETE請求轉換的過濾器

在web.xml配置
1)中文編碼過濾器

	<!-- 過濾器 -->
	<!-- 中文亂碼過濾器 -->
	<filter>
		<filter-name>CharacterEncodingFilter</filter-name>
		<filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
		<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>
	<filter-mapping>
		<filter-name>CharacterEncodingFilter</filter-name>
		<url-pattern>/*</url-pattern>
	</filter-mapping>

2)POST請求向PUT/DELETE請求轉換的過濾器

	<!-- POST請求向PUT/DELETE請求轉換的過濾器 -->
	<filter>
		<filter-name>HiddenHttpMethodFilter</filter-name>
		<filter-class>org.springframework.web.filter.HiddenHttpMethodFilter</filter-class>
	</filter>
	<filter-mapping>
		<filter-name>HiddenHttpMethodFilter</filter-name>
		<url-pattern>/*</url-pattern>
	</filter-mapping>

3)轉發到jsp的PUT/DELETE請求轉換回POST請求
這裏我們需要自己寫一個工具類*

package com.springmvc.filter;

import java.io.IOException;
import java.util.Arrays;
import java.util.Collections;
import java.util.List;

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;
import javax.servlet.http.HttpServletRequestWrapper;
import javax.servlet.http.HttpServletResponse;

public class ForwardedHttpMethodFilter implements Filter {

	private static final List<String> ALLOWED_METHODS = Collections.unmodifiableList(Arrays.asList("PUT", "DELETE", "PATCH"));

	@Override 
	public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain)
			throws IOException, ServletException {

		if (!(request instanceof HttpServletRequest) || !(response instanceof HttpServletResponse)) {
			throw new ServletException("HttpMethodFilter just supports HTTP requests");
		}

		HttpServletRequest httpRequest = (HttpServletRequest) request;
		HttpServletResponse httpResponse = (HttpServletResponse) response;

		if (ALLOWED_METHODS.contains(httpRequest.getMethod())
				&& httpRequest.getAttribute("javax.servlet.error.exception") == null) {
			httpRequest = new ForwradedHttpMethodRequestWrapper(httpRequest);
		}

		chain.doFilter(httpRequest, httpResponse);
	}

	private static class ForwradedHttpMethodRequestWrapper extends HttpServletRequestWrapper {

		public ForwradedHttpMethodRequestWrapper(HttpServletRequest request) {
			super(request);
		}

		public String getMethod() {
			return "POST";
		}
	}

	@Override
	public void destroy() {
		
	}

	@Override
	public void init(FilterConfig arg0) throws ServletException {
		
	}

}

然後配置到web.xml裏

 <filter>
  	<filter-name>ForwardedHttpMethodFilter</filter-name>
  	<filter-class>com.springmvc.util.ForwardedHttpMethodFilter</filter-class>
  </filter>
  <filter-mapping>
  	<filter-name>HiddenHttpMethodFilter</filter-name>
  	<url-pattern>*.jsp</url-pattern>
  	<dispatcher>FORWARD</dispatcher>
  </filter-mapping>

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然後就結束了。
總結：REST風格 遇到PUT，DELETE請求轉換 服務器識別不了，做出以上配置就能解決問題了。謝謝大家支持！

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