我正在做一个简单的程序,任务是从Html表单中获取(用户ID),并且应该显示与之关联的用户名。我是 加载index.html页面时出现404错误。
但是当我在网址上提供值(userid)时,它可以正常工作。
这是代码
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Index page</title>
</head>
<body>
<form action="http://localhost:8080/rest/my/first/rest/users" method="GET">
<label for="uid">ID</label>
<input name="uid" />
<input type="submit" value="Submit" />
</form>
</body>
</html>
这是资源类
@Path("users") //attach client request to resource: .../users
public class RestResource {
Map<String,User> listUsers;
//initialize some resources
public RestResource(){
listUsers = new HashMap();
listUsers.put("1",new User("1", "John"));
listUsers.put("2",new User("2", "Peter"));
}
//return list of users
@GET
@Produces(MediaType.TEXT_PLAIN)
public String listOfUsersInText(){
String list="";
for (Entry<String,User> u:listUsers.entrySet()){
list += u.getValue().getName() + "\n";
}
return list;
}
//return user information corresponding to the requested uid.
@GET
@Path("{uid}") //attach client request to resource: .../users/<uid>
@Produces(MediaType.TEXT_PLAIN)
public String getUID(@PathParam("uid") String uid){
if (!listUsers.containsKey(uid))
return "User not exist!";
return listUsers.get(uid).getID()+":"+listUsers.get(uid).getName();
}
}
WEB.XML
<display-name>rest</display-name>
<servlet>
<servlet-name>Jersey REST Service</servlet-name>
<servlet-class>com.sun.jersey.spi.container.servlet.ServletContainer</servlet-class>
<init-param>
<param-name>com.sun.jersey.config.property.packages</param-name>
<param-value>my.first.rest</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>Jersey REST Service</servlet-name>
<url-pattern>/*</url-pattern>
</servlet-mapping>
答案 0 :(得分:0)
您遵循的方法是错误的我们有几个休息客户端api您可以使用其中任何一个并且可以将请求发送到休息资源
您可以在jsp页面中显示的响应数据。