Spring Mvc Url和参数名称忽略大小写

在开发过程中Spring Mvc 默认 Url和参数名称都是区分大小写的

　　比如：www.a.com/user/getUserInfo?userId=1

　　　　　www.a.com/user/getuserInfo?userId=1

　　　　www.a.com/user/getUserInfo?userid=1

　　www.a.com/user/getuserinfo?userid=1

　　这些都认为不同的地址和参数，在实际中用户根本不区分这些，所以我们要忽略大小写

URL忽略大小写

import org.springframework.context.annotation.Configuration;

import org.springframework.util.AntPathMatcher;

import org.springframework.web.servlet.config.annotation.PathMatchConfigurer;

import org.springframework.web.servlet.config.annotation.WebMvcConfigurationSupport;

/**

 * Created by tianwei on 2017/6/22.

 */

@Configuration

public class SpringWebConfig extends WebMvcConfigurationSupport {

    @Override

    public void configurePathMatch(PathMatchConfigurer configurer) {

        AntPathMatcher pathMatcher = new AntPathMatcher();

        pathMatcher.setCaseSensitive(false);

        configurer.setPathMatcher(pathMatcher);

    }

}

参数名称忽略大小写

import java.io.IOException;

import java.util.Collections;

import java.util.Enumeration;

import java.util.Map;

import javax.servlet.FilterChain;

import javax.servlet.ServletException;

import javax.servlet.http.HttpServletRequest;

import javax.servlet.http.HttpServletRequestWrapper;

import javax.servlet.http.HttpServletResponse;

import org.springframework.util.LinkedCaseInsensitiveMap;

import org.springframework.web.filter.OncePerRequestFilter;

public class CaseInsensitiveRequestParameterNameFilter extends OncePerRequestFilter {

    @Override

    protected void doFilterInternal(HttpServletRequest request, HttpServletResponse response, FilterChain filterChain)

            throws ServletException, IOException {

        filterChain.doFilter(new CaseInsensitiveParameterNameHttpServletRequest(request), response);

    }

    public static class CaseInsensitiveParameterNameHttpServletRequest extends HttpServletRequestWrapper {

        private final LinkedCaseInsensitiveMap<String[]> map = new LinkedCaseInsensitiveMap<>();

        @SuppressWarnings("unchecked")

        public CaseInsensitiveParameterNameHttpServletRequest(HttpServletRequest request) {

            super(request);

            map.putAll(request.getParameterMap());

        }

        @Override

        public String getParameter(String name) {

            String[] array = this.map.get(name);

            if (array != null && array.length > 0)

                return array[0];

            return null;

        }

        @Override

        public Map<String, String[]> getParameterMap() {

            return Collections.unmodifiableMap(this.map);

        }

        @Override

        public Enumeration<String> getParameterNames() {

            return Collections.enumeration(this.map.keySet());

        }

        @Override

        public String[] getParameterValues(String name) {

            return this.map.get(name);

        }

    }

}

定义Bean

    <!--输入参数忽略大小写-->

    <bean id="caseInsensitiveRequestFilterProxy" class="org.springframework.web.filter.DelegatingFilterProxy">

        <property name="targetBeanName" value="caseInsensitiveRequestFilter"/>

    </bean>

    <bean id="caseInsensitiveRequestFilter"

          class="com.hantianwei.util.CaseInsensitiveRequestParameterNameFilter">

    </bean>

web.xml 增加Filter

  <filter>

    <filter-name>caseInsensitiveRequestFilterProxy</filter-name>

    <filter-class>org.springframework.web.filter.DelegatingFilterProxy</filter-class>

  </filter>

  <filter-mapping>

    <filter-name>caseInsensitiveRequestFilterProxy</filter-name>

    <url-pattern>/*</url-pattern>

  </filter-mapping>

到此再次运行项目就可以了，最上面的URL访问的是同一页面了

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