Spring MVC常用客户端参数接收方式详解

public class Book {
  private Integer bookId;
  private String author;
  //生成Get、Set方法，此处省略
}

<form action="/queryString" method="post">
  <input type="text" name="bookId">
  <input type="text" name="author">
  <input type="submit" value="提交">
</form>

@Controller
public class ParamPassDemo {
  @RequestMapping(value="/queryString")
  public String test1(Integer bookId, String author) {
    System.out.println("bookId="+bookId+", author="+author);
    //此处返回的地址为（/WEB-INF/jsp/index.jsp）
    return "index";
  }
}

<form action="/queryStringWithSpecName" method="post">
  <input type="text" name="bookId" value="321">
  <input type="text" name="author" value="Jack">
  <input type="submit" value="提交">
</form>

@Controller
public class ParamPassDemo {
  @RequestMapping("/queryStringWithSpecName")
  public String test2((value="bookId",required=false) Integer id, @RequestParam("author") String name) {
    System.out.println("bookId="+id+", author="+name);
    return "index";
  }
}

<button onclick="clickMe()">点我</button>
<script>
  function clickMe() {
      $.ajax({
      type : 'POST',
      url : "/queryStringWithSpecName",
      data : {
        "bookId" : 1,
        "author" : "Jack"
      },
    });
  }
</script>

<form action="/queryStringWithDomainObj" method="post">
  <input type="text" name="bookId">
  <input type="text" name="author">
  <input type="submit" value="提交">
</form>

@Controller
public class ParamPassDemo {
  @RequestMapping("/queryStringWithDomainObj")
  public String test3(Book book) {
    System.out.println("bookId="+book.getBookId()+", author="+book.getAuthor());
    return "index";
  }
 }

<a href="/book/1" rel="external nofollow" >testPathVariable</a>

@Controller
public class ParamPassDemo {
  //@PathVariable可以用来映射URL中的占位符到目标方法的参数中
  @RequestMapping("/book/{bookId}")
  public String test4(@PathVariable("bookId") Integer bookId) {
    System.out.println("bookId:" + bookId);
    return "index";
  }
 }

<form action="/queryBook" method="post">
  <input type="text" name="bookId">
  <input type="text" name="author">
  <input type="submit" value="提交">
</form>

@Controller
public class ParamPassDemo {
  @RequestMapping("/queryBook")
  public String test5(HttpServletRequest request) {
    System.out.println("bookId:" + request.getParameter("bookId"));
    //此处index.jsp界面在WEB-INF下
    return "redirect:/index.jsp";
  }
 }

@Controller
public class ParamPassDemo {
  @RequestMapping("/test6")
  public String test6(String bookId){
    System.out.println("bookId="+bookId);
    //使用服务端跳转的方式转向到另一个controller
    //return "forward:queryBook?bookId="+bookId;
    return "redirect:queryUser?bookId="+bookId;
  }
 }