SpringMvc Controller請求連接忽略大小寫(包含攔截器)及@ResponseBody返回String中文亂碼處理。。。html
@RequestMapping(value = "/tests", method = RequestMethod.POST) @ResponseBody public String tests(HttpServletRequest request){ return "我是"; }
好比咱們有這麼個請求,返回的是「我是」這麼一箇中文字符串,請求連接是「/tests」,先處理返回中文亂碼問題.
1)咱們通常會在springmvc啓動配置文件中配置這麼一段StringHttpMessageConverter的轉換器,但即便是配置了也無論用:
<!-- 對包中的全部類進行掃描,以完成Bean建立和自動依賴注入的功能 --> <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/> <!-- 開啓@controller註解,同時解決返回中文亂碼問題 --> <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執行AJAX時,返回JSON出現下載文件 --> <bean id="fastJsonHttpMessageConverter" class="com.alibaba.fastjson.support.spring.FastJsonHttpMessageConverter"> <property name="supportedMediaTypes"> <list> <!-- 這裏順序不能反,必定先寫text/html,否則ie下出現下載提示 --> <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>
請注意上面這段配置,是先掃包,後啓用SpringMVC驅動器轉換器的配置,這樣配置返回json出現下載連接的問題是解決了,可是返回中文字符串亂碼問題並無解決,如何解決呢?很簡單,講掃包和驅動器的位置對調一下,配置以下便可:web
<!-- 開啓@controller註解,同時解決返回中文亂碼問題 --> <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執行AJAX時,返回JSON出現下載文件 --> <bean id="fastJsonHttpMessageConverter" class="com.alibaba.fastjson.support.spring.FastJsonHttpMessageConverter"> <property name="supportedMediaTypes"> <list> <!-- 這裏順序不能反,必定先寫text/html,否則ie下出現下載提示 --> <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> <!-- 對包中的全部類進行掃描,以完成Bean建立和自動依賴注入的功能 --> <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請求連接忽略大小寫(攔截器)spring
網上不少資料是這麼配置的,加一個繼承自express
WebMvcConfigurationSupport的轉換類,它的做用是將全部@RequestMapping的請求均轉換爲小寫,這樣作請求問題是解決了,如上用http://localhost:8080/tets或者http://localhost:8080/Tests都能請求到,可是若是
配置了<mvc:interceptors>攔截器,攔截器是攔截不到的,攔截器就成了瞎子不起做用了,一般配置以下(這段配置攔截器無論用):json
@Configuration public class WebConfig extends WebMvcConfigurationSupport { @Override public void configurePathMatch(PathMatchConfigurer configurer) { AntPathMatcher matcher = new AntPathMatcher(); matcher.setCaseSensitive(false); configurer.setPathMatcher(matcher); } }
正確的作法以下,繼承自AntPathMatcher路徑匹配:mvc
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); } }
而後將這個類加入</mvc:annotation-driven>內,以下:app
<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執行AJAX時,返回JSON出現下載文件 --> <bean id="fastJsonHttpMessageConverter" class="com.alibaba.fastjson.support.spring.FastJsonHttpMessageConverter"> <property name="supportedMediaTypes"> <list> <!-- 這裏順序不能反,必定先寫text/html,否則ie下出現下載提示 --> <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>
因此,如上兩個問題合起來配置以下:ide
<!-- 開啓@controller註解,同時解決返回中文亂碼問題 --> <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執行AJAX時,返回JSON出現下載文件 --> <bean id="fastJsonHttpMessageConverter" class="com.alibaba.fastjson.support.spring.FastJsonHttpMessageConverter"> <property name="supportedMediaTypes"> <list> <!-- 這裏順序不能反,必定先寫text/html,否則ie下出現下載提示 --> <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>--> <!-- 對包中的全部類進行掃描,以完成Bean建立和自動依賴注入的功能 --> <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/>