SpringMvc Controller请求链接忽略大小写(包含拦截器)及@ResponseBody返回String中文乱码处理

时间:2021-12-26 08:29:54

SpringMvc Controller请求链接忽略大小写(包含拦截器)及@ResponseBody返回String中文乱码处理。。。

@RequestMapping(value = "/tests", method = RequestMethod.POST)
@ResponseBody
public String tests(HttpServletRequest request){
return "我是";
}

比如我们有这么个请求,返回的是“我是”这么一个中文字符串,请求链接是“/tests”,先处理返回中文乱码问题.

1)我们一般会在springmvc启动配置文件中配置这么一段StringHttpMessageConverter的转换器,但即使是配置了也不管用:
  
<!-- 对包中的所有类进行扫描,以完成Bean创建和自动依赖注入的功能 -->
<context:component-scan base-package="com.web.controller" use-default-filters="false">
<context:include-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
</context:component-scan> <aop:aspectj-autoproxy/> <!-- 开启@controller注解,同时解决返回中文乱码问题 -->
<mvc:annotation-driven>
<mvc:message-converters>
<!--<bean id="stringHttpMessageConverter" class="org.springframework.http.converter.StringHttpMessageConverter"/>-->
<bean class="org.springframework.http.converter.StringHttpMessageConverter">
<constructor-arg value="UTF-8"/>
</bean>
<!-- 避免IE执行AJAX时,返回JSON出现下载文件 -->
<bean id="fastJsonHttpMessageConverter" class="com.alibaba.fastjson.support.spring.FastJsonHttpMessageConverter">
<property name="supportedMediaTypes">
<list>
<!-- 这里顺序不能反,一定先写text/html,不然ie下出现下载提示 -->
<value>text/html;charset=UTF-8</value>
<value>application/json;charset=UTF-8</value>
</list>
</property>
<property name="features">
<list>
<value>WriteMapNullValue</value>
<value>DisableCircularReferenceDetect</value>
</list>
</property>
</bean>
</mvc:message-converters>
</mvc:annotation-driven>

  请注意上面这段配置,是先扫包,后启用SpringMVC驱动器转换器的配置,这样配置返回json出现下载链接的问题是解决了,但是返回中文字符串乱码问题并没有解决,如何解决呢?很简单,讲扫包和驱动器的位置对调一下,配置如下即可:

  

    <!-- 开启@controller注解,同时解决返回中文乱码问题 -->
<mvc:annotation-driven>
<mvc:message-converters>
<!--<bean id="stringHttpMessageConverter" class="org.springframework.http.converter.StringHttpMessageConverter"/>-->
<bean class="org.springframework.http.converter.StringHttpMessageConverter">
<constructor-arg value="UTF-8"/>
</bean>
<!-- 避免IE执行AJAX时,返回JSON出现下载文件 -->
<bean id="fastJsonHttpMessageConverter" class="com.alibaba.fastjson.support.spring.FastJsonHttpMessageConverter">
<property name="supportedMediaTypes">
<list>
<!-- 这里顺序不能反,一定先写text/html,不然ie下出现下载提示 -->
<value>text/html;charset=UTF-8</value>
<value>application/json;charset=UTF-8</value>
</list>
</property>
<property name="features">
<list>
<value>WriteMapNullValue</value>
<value>DisableCircularReferenceDetect</value>
</list>
</property>
</bean>
</mvc:message-converters>
</mvc:annotation-driven> <!-- 对包中的所有类进行扫描,以完成Bean创建和自动依赖注入的功能 -->
<context:component-scan base-package="com.web.controller" use-default-filters="false">
<context:include-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
</context:component-scan> <aop:aspectj-autoproxy/>

  2)Controller请求链接忽略大小写(拦截器)

    网上很多资料是这么配置的,加一个继承自

WebMvcConfigurationSupport的转换类,它的作用是将所有@RequestMapping的请求均转换为小写,这样做请求问题是解决了,如上用http://localhost:8080/tets或者http://localhost:8080/Tests都能请求到,但是如果

配置了<mvc:interceptors>拦截器,拦截器是拦截不到的,拦截器就成了瞎子不起作用了,通常配置如下(这段配置拦截器不管用):

    

@Configuration
public class WebConfig extends WebMvcConfigurationSupport { @Override
public void configurePathMatch(PathMatchConfigurer configurer) {
AntPathMatcher matcher = new AntPathMatcher();
matcher.setCaseSensitive(false);
configurer.setPathMatcher(matcher);
}
}

    正确的做法如下,继承自AntPathMatcher路径匹配:

   

public class CaseInsensitivePathMatcher extends AntPathMatcher {

    protected boolean doMatch(String pattern, String path, boolean fullMatch, Map uriTemplateVariables) {
return super.doMatch(pattern.toLowerCase(), path.toLowerCase(), fullMatch, uriTemplateVariables);
}
}

    然后将这个类加入</mvc:annotation-driven>内,如下:

<bean id="caseInsensitivePathMatcher" class="com.web.interceptor.CaseInsensitivePathMatcher"/>
<mvc:annotation-driven>
<mvc:message-converters>
<!--<bean id="stringHttpMessageConverter" class="org.springframework.http.converter.StringHttpMessageConverter"/>-->
<bean class="org.springframework.http.converter.StringHttpMessageConverter">
<constructor-arg value="UTF-8"/>
</bean>
<!-- 避免IE执行AJAX时,返回JSON出现下载文件 -->
<bean id="fastJsonHttpMessageConverter" class="com.alibaba.fastjson.support.spring.FastJsonHttpMessageConverter">
<property name="supportedMediaTypes">
<list>
<!-- 这里顺序不能反,一定先写text/html,不然ie下出现下载提示 -->
<value>text/html;charset=UTF-8</value>
<value>application/json;charset=UTF-8</value>
</list>
</property>
<property name="features">
<list>
<value>WriteMapNullValue</value>
<value>DisableCircularReferenceDetect</value>
</list>
</property>
</bean>
</mvc:message-converters>
<mvc:path-matching path-matcher="caseInsensitivePathMatcher"/>
</mvc:annotation-driven>

所以,如上两个问题合起来配置如下:

  

<!-- 开启@controller注解,同时解决返回中文乱码问题 -->
<bean id="caseInsensitivePathMatcher" class="com.web.interceptor.CaseInsensitivePathMatcher"/>
<mvc:annotation-driven>
<mvc:message-converters>
<!--<bean id="stringHttpMessageConverter" class="org.springframework.http.converter.StringHttpMessageConverter"/>-->
<bean class="org.springframework.http.converter.StringHttpMessageConverter">
<constructor-arg value="UTF-8"/>
</bean>
<!-- 避免IE执行AJAX时,返回JSON出现下载文件 -->
<bean id="fastJsonHttpMessageConverter" class="com.alibaba.fastjson.support.spring.FastJsonHttpMessageConverter">
<property name="supportedMediaTypes">
<list>
<!-- 这里顺序不能反,一定先写text/html,不然ie下出现下载提示 -->
<value>text/html;charset=UTF-8</value>
<value>application/json;charset=UTF-8</value>
</list>
</property>
<property name="features">
<list>
<value>WriteMapNullValue</value>
<value>DisableCircularReferenceDetect</value>
</list>
</property>
</bean>
</mvc:message-converters>
<mvc:path-matching path-matcher="caseInsensitivePathMatcher"/>
</mvc:annotation-driven> <!--<mvc:annotation-driven> </mvc:annotation-driven>--> <!-- 对包中的所有类进行扫描,以完成Bean创建和自动依赖注入的功能 -->
<context:component-scan base-package="com.web.controller" use-default-filters="false">
<context:include-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
</context:component-scan> <bean id="propertyConfigurer" class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
<property name="locations">
<list>
<value>classpath*:properties/*.properties</value>
</list>
</property>
<property name="fileEncoding" value="UTF-8" />
<property name="ignoreUnresolvablePlaceholders" value="true" />
</bean> <aop:aspectj-autoproxy/>