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大家好，我現在嘗試七天來從Web上的存儲庫中檢索數據。特別是我嘗試檢索從這裏作者的列表（其中有網址：HTTP：//www.../base/author）：使用Spring MVC從存儲庫中檢索XML元數據
<authors xmlns="http:www.../base" xmlns:atom="http://www.w3.org/2005/atom">
<author>
<atom:link rel="author" type="application/xml" href="http://www.../base/author/1"/>
</author>
<author>
<atom:link rel="author" type="application/xml" href="http://www.../base/author/2"/>
</author>
<author>
<atom:link rel="author" type="application/xml" href="http://www.../base/author/3"/>
</author>
</authors>
而且每個作者seperately從這裏：
<author xmlns="http://http:www.../base" xmlns:atom="http://www.w3.org/2005/atom">
<name>S. Crocker</name>
<address>None</address>
<affiliation></affiliation>
<email>None</email>
</author>
我的模型類：
import javax.xml.bind.annotation.XmlRootElement;
@XmlRootElement(name="author")
public class Author {
private Long id;
private String name;
private String address;
private String affiliation;
private String email;
public Long getId() {
return id;
}
public void setId(Long id) {
this.id = id;
}
public String getName() {
return name;
}
public void setFirstName(String name) {
this.name = name;
}
public String getAddress() {
return address;
}
public void setAddress(String address) {
this.address = address;
}
public String getAffiliation() {
return affiliation;
}
public void setAffiliation(String affiliation) {
this.affiliation = affiliation;
}
public String getEmail() {
return email;
}
public void setEmail(String email) {
this.email = email;
}
}
和：
import java.util.List;
import javax.xml.bind.annotation.XmlRootElement;
@XmlRootElement(name="authors")
public class AuthorList {
private List<Author> data;
public List<Author> getData() {
return data;
}
public void setData(List<Author> data) {
this.data = data;
}
}
控制器：
public class Controller {
protected static Logger logger = Logger.getLogger("controller");
private RestTemplate restTemplate = new RestTemplate();
/**
* Retrieves all records from the REST provider
* and displays the records in a JSP page
*/
@RequestMapping(value = "/authors", method = RequestMethod.GET)//getall
public String getAll(Model model) {
// Prepare acceptable media type
List<MediaType> acceptableMediaTypes = new ArrayList<MediaType>();
acceptableMediaTypes.add(MediaType.APPLICATION_XML);
// Prepare header
HttpHeaders headers = new HttpHeaders();
headers.setAccept(acceptableMediaTypes);
HttpEntity<Author> entity = new HttpEntity<Author>(headers);
// Send the request as GET
try {
ResponseEntity<AuthorList> result = restTemplate.exchange("href="http://www.../base/author/",
HttpMethod.GET, entity, AuthorList.class);
// Add to model
model.addAttribute("authors", result.getBody().getData());
} catch (Exception e) {
}
// This will resolve to /WEB-INF/jsp/personspage.jsp
return "personspage";
}
/**
* Retrieves a single record from the REST provider
* and displays the result in a JSP page
*/
@RequestMapping(value = "/author", method = RequestMethod.GET)
public String getPerson(@RequestParam("id") Long id, Model model) {
// Prepare acceptable media type
List<MediaType> acceptableMediaTypes = new ArrayList<MediaType>();
acceptableMediaTypes.add(MediaType.APPLICATION_XML);
// Prepare header
HttpHeaders headers = new HttpHeaders();
headers.setAccept(acceptableMediaTypes);
HttpEntity<Author> entity = new HttpEntity<Author>(headers);
// Send the request as GET
try {
ResponseEntity<Author> result = restTemplate.exchange("href="http://www.../base/author/{id}",
HttpMethod.GET, entity, Author.class, id);
// Add to model
model.addAttribute("author", result.getBody());
} catch (Exception e) {
}
// This will resolve to /WEB-INF/jsp/getpage.jsp
return "getpage";
}
}
最後的2點意見之一，GETPAGE：
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
<%@page contentType="text/html" pageEncoding="UTF-8"%>
<!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>Insert title here</title>
</head>
<body>
<h1>Get Author</h1>
<c:if test="${empty author}">
No records found!
</c:if>
<c:if test="${!empty author}">
<table style="border: 1px solid #333">
<tr>
<td style="width: 100px">Id</td>
<td>${author.id}</td>
</tr>
<tr>
<td>Name</td>
<td>${author.name}</td>
</tr>
<tr>
<td>Address</td>
<td>${author.address}</td>
</tr>
<tr>
<td>Affiliation</td>
<td>${author.affiliation}</td>
</tr>
<tr>
<td>Email</td>
<td>${author.email}</td>
</tr>
</table>
</c:if>
現在，wheni只要運行該程序我坐查看其中說：
沒有找到記錄！
當我給出以下網址： http://localhost:8080/Client_for_rest/author?id=1
我應該從reposiory接收數據，姓名等電子郵件，但 我這一翻譯收到此： 所請求的資源（）不可用。 我不明白是什麼問題，URL的 之間的映射接收到的數據？ 任何命題？