Jersey helloworld示例从浏览器获取404代码

时间:2016-06-15 07:47:28

标签: java web-services jersey

下面是我的web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" id="WebApp_ID" version="3.0">
  <display-name>jersey_helloworld</display-name>
  <welcome-file-list>
    <welcome-file>index.html</welcome-file>
    <welcome-file>index.htm</welcome-file>
    <welcome-file>index.jsp</welcome-file>
    <welcome-file>default.html</welcome-file>
    <welcome-file>default.htm</welcome-file>
    <welcome-file>default.jsp</welcome-file>
  </welcome-file-list>
  <servlet>
    <servlet-name>jerseyhello</servlet-name>
    <servlet-class>org.glassfish.jersey.servlet.ServletContainer</servlet-class>
    <init-param>
      <param-name>jersey.config.server.provider.packages</param-name>
      <param-value>com.javapapers.webservices.rest.jersey</param-value>
    </init-param>
    <load-on-startup>1</load-on-startup>
  </servlet>
  <servlet-mapping>
    <servlet-name>jerseyhello</servlet-name>
    <url-pattern>/rest/*</url-pattern>
  </servlet-mapping>
</web-app>

下面是web-inf / lib中的所有jar,我已将它们添加到构建路径中。 enter image description here

以下是我的HelloWorld代码。

package com.javapapers.webservices.rest.jersey;

import javax.ws.rs.GET;
import javax.ws.rs.Path;
import javax.ws.rs.Produces;
import javax.ws.rs.core.MediaType;

@Path("/helloworld")
public class HelloWorld {

    @GET
    @Produces(MediaType.TEXT_PLAIN)
    public String sayPlainTextHello() {
        return "Hello World RESTful Jersey!";
    }

    @GET
    @Produces(MediaType.TEXT_XML)
    public String sayXMLHello() {
        return "<?xml version=\"1.0\"?>" + "<hello> Hello World RESTful Jersey"
                + "</hello>";
    }

    @GET
    @Produces(MediaType.TEXT_HTML)
    public String sayHtmlHello() {
        return "<html> " + "<title>" + "Hello World RESTful Jersey"
                + "</title>" + "<body><h1>" + "Hello World RESTful Jersey"
                + "</body></h1>" + "</html> ";
    }

}

最后,我从firefox中调用了这个Web服务,如下所示。

http://localhost:8080/jersey_helloworld/rest/helloworld

然后打印HTTP状态404 - 未找到。并且在eclipse控制台中没有打印任何错误消息。

2 个答案:

答案 0 :(得分:1)

我用过:

1)关注罐子:

enter image description here

2)web.xml

<?xml version="1.0" encoding="UTF-8"?>
<!-- This web.xml file is not required when using Servlet 3.0 container,
     see implementation details http://jersey.java.net/nonav/documentation/latest/jax-rs.html -->
<web-app version="2.5" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">
    <servlet>
        <servlet-name>jerseyhello</servlet-name>
        <servlet-class>org.glassfish.jersey.servlet.ServletContainer</servlet-class>
        <init-param>
            <param-name>jersey.config.server.provider.packages</param-name>
            <param-value>com.javapapers.webservices.rest.jersey</param-value>
        </init-param>
        <load-on-startup>1</load-on-startup>
    </servlet>
    <servlet-mapping>
        <servlet-name>jerseyhello</servlet-name>
        <url-pattern>/rest/*</url-pattern>
    </servlet-mapping>
</web-app>

3)您的源代码没有任何修改。

结果是:

enter image description here

答案 1 :(得分:0)

您必须为每个方法添加@Path注释以指定不同的路径。现在,您只调用/helloworld,但没有与该路径关联的方法。

例如,对于第一种方法,尝试这样做:

@GET
@Produces(MediaType.TEXT_PLAIN)
@Path("/plainText")
public String sayPlainTextHello() {
    return "Hello World RESTful Jersey!";
}

并以这种方式称呼它:

http://localhost:8080/jersey_helloworld/rest/helloworld/plainText