我正在尝试生成一个简单的JSON响应。现在,我收到406 Not Acceptable错误。Tomcat说:“此请求标识的资源只能根据请求“接受”标头生成特性不可接受的响应。” 即使我的Accept标题是
Accept
Accept:text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
在tomcat / lib中,我拥有所有的Tomcat jar,Spring jar和jackson-all-1.9.0.jar。我在Tomcat 7中使用Spring 3.2.2。
我知道这个问题已经讨论了很多次,但是没有一种解决方案对我有用。
web.xml
<web-app id="WebApp_ID" version="2.4" xmlns="http://java.sun.com/xml/ns/j2ee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd"> <display-name>Spring Web MVC Application</display-name> <servlet> <servlet-name>dispatcher</servlet-name> <servlet-class> org.springframework.web.servlet.DispatcherServlet </servlet-class> <load-on-startup>1</load-on-startup> </servlet> <servlet-mapping> <servlet-name>dispatcher</servlet-name> <url-pattern>*.htm</url-pattern> </servlet-mapping> </web-app>
dispatcher-servlet.xml
<beans xmlns="http://www.springframework.org/schema/beans" xmlns:context="http://www.springframework.org/schema/context" xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.5.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd"> <bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver" > <property name="prefix"> <value>/WEB-INF/pages/</value> </property> <property name="suffix"> <value>.jsp</value> </property> </bean> <context:component-scan base-package="com.smiechmateusz.controller" /> <context:annotation-config /> <mvc:annotation-driven /> </beans>
HelloWorldController.java
package com.smiechmateusz.controller; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import org.springframework.stereotype.Controller; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RequestMethod; import org.springframework.web.bind.annotation.ResponseBody; import org.springframework.web.servlet.ModelAndView; import org.springframework.web.servlet.mvc.AbstractController; import com.smiechmateusz.dao.Foo; @Controller @RequestMapping("/") public class HelloWorldController extends AbstractController{ @Override protected ModelAndView handleRequestInternal(HttpServletRequest request, HttpServletResponse response) throws Exception { ModelAndView model = new ModelAndView("HelloWorldPage"); return model; } @RequestMapping(value="foobar.htm", method = RequestMethod.GET) public @ResponseBody Foo getShopInJSON() { Foo f = new Foo(); f.setX(1); f.setY(2); f.setDescription("desc"); return f; } }
Foo.java
package com.smiechmateusz.dao; import java.io.Serializable; import javax.persistence.Column; import javax.persistence.Entity; import javax.persistence.GeneratedValue; import javax.persistence.Id; import javax.persistence.Table; @Entity @Table(name="foobaz") public class Foo implements Serializable { private int x, y; String description; int id; @Column(name = "x") public int getX() { return x; } public void setX(int x) { this.x = x; } @Column(name = "y") public int getY() { return y; } public void setY(int y) { this.y = y; } @Column(name = "description") public String getDescription() { return description; } public void setDescription(String description) { this.description = description; } @Id @GeneratedValue @Column(name = "id") public int getId() { return id; } public void setId(int id) { this.id = id; } }
我已经尝试添加
<bean id="jsonConverter" class="org.springframework.http.converter.json.MappingJacksonHttpMessageConverter"></bean> <bean class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter"> <property name="messageConverters"> <list> <ref bean="jsonConverter"/> </list> </property> </bean>
到我的 dispatcher-servlet.xml 或将 jakcson-all 更改为 jackson-asl 和 jackson- core-asl, 但输出是相同的。
接受:text / html,application / xhtml + xml,application / xml; q = 0.9, / ; q = 0.8
那应该是问题。JSON用作application/json。如果相应地设置了Accept标头,则应该得到正确的响应。(有一些浏览器插件可让您设置标题,我最喜欢Firefox的“海报”)
application/json