Jersey,Tomcat:请求的资源不可用错误
Jersey, Tomcat: The requested resource is not available error
我一直致力于在 RAD 8.5 中使用 Jersey 和 Tomcat 设置 RESTful 服务。我已经查看了大量与我的错误相关的 Whosebug 问题,其中 none 有效。我的控制台没有错误。
当我输入:http://localhost:8080/, I get the Apache homepage, so the server is working, but http://localhost:8080/jersey/rest/hello or http://localhost:8080/jersey/WEB-INF/classes/jersey/Hello.java
不起作用。
这是错误:(旁边有我的 jar 库)
这是我的 Hello.java
package jersey;
import javax.ws.rs.GET;
import javax.ws.rs.Path;
import javax.ws.rs.Produces;
import javax.ws.rs.core.MediaType;
@Path("/hello")
public class Hello {
// This method is called if TEXT_PLAIN is request
@GET
@Produces(MediaType.TEXT_PLAIN)
public String sayPlainTextHello() {
return "Hello Jersey";
}
// This method is called if XML is request
@GET
@Produces(MediaType.TEXT_XML)
public String sayXMLHello() {
return "<?xml version=\"1.0\"?>" + "<hello> Hello Jersey" + "</hello>";
}
@GET
@Produces(MediaType.TEXT_HTML)
public String sayHtmlHello() {
return "<html> " + "<title>" + "Hello Jersey" + "</title>"
+ "<body><h1>" + "Hello Jersey" + "</body></h1>" + "</html> ";
}
}
还有我的web.xml
<servlet>
<servlet-name>Jersey REST Service</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.example</param-value>
</init-param>
</servlet>
版本:
- Tomcat: 7.0.663
- 弧度:8.5
- 球衣:2.19
谢谢,
回应 Maciej
这奏效了!我需要添加 <servlet-mapping>
和 /*
的 url 模式。然后使用http://localhost:8080/jersey/hello,我得到了服务器的响应!
<?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"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
id="jersey" version="2.5">
<servlet>
<servlet-name>jersey</servlet-name>
<servlet-class>org.glassfish.jersey.servlet.ServletContainer</servlet-class>
<init-param>
<param-name>jersey.config.server.provider.packages</param-name>
<param-value>jersey</param-value>
</init-param>
</servlet>
<servlet-mapping>
<servlet-name>jersey</servlet-name>
<url-pattern>/*</url-pattern>
</servlet-mapping>
</web-app>
您正在将编译代码部署到 Tomcat,因此您将无法访问 *.java 资源。
注释@Path("/hello")
表示资源可用的路径。
设置为:base URL + /your_path
。 base URL
基于您的应用程序名称、servlet 和 web.xml
:
中的 URL 模式
<?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"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
id="jersey" version="2.5">
<servlet>
<servlet-name>jersey</servlet-name>
<servlet-class>org.glassfish.jersey.servlet.ServletContainer</servlet-class>
<init-param>
<param-name>jersey.config.server.provider.packages</param-name>
<param-value>jersey</param-value>
</init-param>
</servlet>
<servlet-mapping>
<servlet-name>jersey</servlet-name>
<url-pattern>/*</url-pattern>
</servlet-mapping>
</web-app>
同时将 @Produces
注释替换为 @Consumes
:
package jersey;
import javax.ws.rs.Consumes;
import javax.ws.rs.GET;
import javax.ws.rs.Path;
import javax.ws.rs.core.MediaType;
@Path("/hello")
public class Hello {
// This method is called if TEXT_PLAIN is request
@GET
@Consumes(MediaType.TEXT_PLAIN)
public String sayPlainTextHello() {
return "Hello Jersey";
}
// This method is called if XML is request
@GET
@Consumes(MediaType.TEXT_XML)
public String sayXMLHello() {
return "<?xml version=\"1.0\"?>" + "<hello> Hello Jersey" + "</hello>";
}
@GET
@Consumes(MediaType.TEXT_HTML)
public String sayHtmlHello() {
return "<html> " + "<title>" + "Hello Jersey" + "</title>"
+ "<body><h1>" + "Hello Jersey" + "</body></h1>" + "</html> ";
}
}
确保您已将所有必需的 Jersey Jar 文件保存在 "WEB-INF -> lib" 文件夹
即使按照 Maciej 提到的步骤进行操作后,如果它说 404 资源未找到,请提及实现应用程序 class 的子 class 并将其写入 [= 中的 init-param 标记中15=]
<init-param>
<param-name>javax.ws.rs.Application</param-name>
<param-value>packagename.java_class_name</param-value>
</init-param>
这对我有用。
这个问题通过这些步骤解决了
1. Select all files in lib folder and right click on it
2. Then click add to build path
我一直致力于在 RAD 8.5 中使用 Jersey 和 Tomcat 设置 RESTful 服务。我已经查看了大量与我的错误相关的 Whosebug 问题,其中 none 有效。我的控制台没有错误。
当我输入:http://localhost:8080/, I get the Apache homepage, so the server is working, but http://localhost:8080/jersey/rest/hello or http://localhost:8080/jersey/WEB-INF/classes/jersey/Hello.java 不起作用。
这是错误:(旁边有我的 jar 库)
Hello.java
package jersey;
import javax.ws.rs.GET;
import javax.ws.rs.Path;
import javax.ws.rs.Produces;
import javax.ws.rs.core.MediaType;
@Path("/hello")
public class Hello {
// This method is called if TEXT_PLAIN is request
@GET
@Produces(MediaType.TEXT_PLAIN)
public String sayPlainTextHello() {
return "Hello Jersey";
}
// This method is called if XML is request
@GET
@Produces(MediaType.TEXT_XML)
public String sayXMLHello() {
return "<?xml version=\"1.0\"?>" + "<hello> Hello Jersey" + "</hello>";
}
@GET
@Produces(MediaType.TEXT_HTML)
public String sayHtmlHello() {
return "<html> " + "<title>" + "Hello Jersey" + "</title>"
+ "<body><h1>" + "Hello Jersey" + "</body></h1>" + "</html> ";
}
}
还有我的web.xml
<servlet>
<servlet-name>Jersey REST Service</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.example</param-value>
</init-param>
</servlet>
版本:
- Tomcat: 7.0.663
- 弧度:8.5
- 球衣:2.19
谢谢,
回应 Maciej
这奏效了!我需要添加 <servlet-mapping>
和 /*
的 url 模式。然后使用http://localhost:8080/jersey/hello,我得到了服务器的响应!
<?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"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
id="jersey" version="2.5">
<servlet>
<servlet-name>jersey</servlet-name>
<servlet-class>org.glassfish.jersey.servlet.ServletContainer</servlet-class>
<init-param>
<param-name>jersey.config.server.provider.packages</param-name>
<param-value>jersey</param-value>
</init-param>
</servlet>
<servlet-mapping>
<servlet-name>jersey</servlet-name>
<url-pattern>/*</url-pattern>
</servlet-mapping>
</web-app>
您正在将编译代码部署到 Tomcat,因此您将无法访问 *.java 资源。
注释@Path("/hello")
表示资源可用的路径。
设置为:base URL + /your_path
。 base URL
基于您的应用程序名称、servlet 和 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"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
id="jersey" version="2.5">
<servlet>
<servlet-name>jersey</servlet-name>
<servlet-class>org.glassfish.jersey.servlet.ServletContainer</servlet-class>
<init-param>
<param-name>jersey.config.server.provider.packages</param-name>
<param-value>jersey</param-value>
</init-param>
</servlet>
<servlet-mapping>
<servlet-name>jersey</servlet-name>
<url-pattern>/*</url-pattern>
</servlet-mapping>
</web-app>
同时将 @Produces
注释替换为 @Consumes
:
package jersey;
import javax.ws.rs.Consumes;
import javax.ws.rs.GET;
import javax.ws.rs.Path;
import javax.ws.rs.core.MediaType;
@Path("/hello")
public class Hello {
// This method is called if TEXT_PLAIN is request
@GET
@Consumes(MediaType.TEXT_PLAIN)
public String sayPlainTextHello() {
return "Hello Jersey";
}
// This method is called if XML is request
@GET
@Consumes(MediaType.TEXT_XML)
public String sayXMLHello() {
return "<?xml version=\"1.0\"?>" + "<hello> Hello Jersey" + "</hello>";
}
@GET
@Consumes(MediaType.TEXT_HTML)
public String sayHtmlHello() {
return "<html> " + "<title>" + "Hello Jersey" + "</title>"
+ "<body><h1>" + "Hello Jersey" + "</body></h1>" + "</html> ";
}
}
确保您已将所有必需的 Jersey Jar 文件保存在 "WEB-INF -> lib" 文件夹
即使按照 Maciej 提到的步骤进行操作后,如果它说 404 资源未找到,请提及实现应用程序 class 的子 class 并将其写入 [= 中的 init-param 标记中15=]
<init-param>
<param-name>javax.ws.rs.Application</param-name>
<param-value>packagename.java_class_name</param-value>
</init-param>
这对我有用。
这个问题通过这些步骤解决了
1. Select all files in lib folder and right click on it
2. Then click add to build path