浅谈SpringMVC的五种数据提交方式

单数据提交

//Index.jsp

<h3>单个数据提交</h3>

<hr/>

<form action="${pageContext.request.contextPath}/one.action">

    i d:<input type="text" name="id"><br>

    姓名:<input type="text" name="name"><br>

    <br>

    <input type="submit" value="submit">

</form>

//servlet类

@Controller

public class DataSubmitAction {



    /**

     *i d:<input type="text" name="id"><br>

     *姓名:<input type="text" name="name"><br>

     */

    @RequestMapping(value = "/one")

    public String oneData(int id,String name){

        System.out.println("id:"+id+" name:"+name);

        return "main";

    }

}

对象数据提交

POJO

Index.jsp

<h3>对象数据提交</h3>

<hr/>

<form action="${pageContext.request.contextPath}/Object.action">

    i d:<input type="text" name="id"><br>

    姓名:<input type="text" name="name"><br>

    <br>

    <input type="submit" value="submit">

</form>

Servlet类(controller)

@RequestMapping(value = "/Object")

public String ObjectData(User user){

    System.out.println(" id:"+user.getId()+" name:"+user.getName());

return "main";

}

动态占位符数据提交

用于超链接或地址栏提交数据

Index.jsp

<h3>动态占位符提交数据</h3>

<hr/>

    <a href="${pageContext.request.contextPath}/placeholder/66/张三.action">动态提交数据</a>

Servlet类(controller)

@RequestMapping(value = "/placeholder/{id}/{name}")



public String placeholderData(@PathVariable int id,@PathVariable String name){

    System.out.println("id: "+id+" name:"+name);

    return "main";

}

或者

请求参数名称映射数据提交

解决映射名称不一致问题（提交请求参数的action的形参名称不一致，使用@RequestParam注解解析）

Index.jsp

<h3>请求参数名称映射提交数据</h3>

<hr/>

<form action="${pageContext.request.contextPath}/Mapping.action">

    i d:<input type="text" name="id"><br>

    姓名:<input type="text" name="name"><br>

    <br>

    <input type="submit" value="submit">

</form>

Servlet类(controller)

@RequestMapping("/Mapping")

public String MappingData(@RequestParam("id") int myid,@RequestParam("name") String myname){

    System.out.println("id:"+myid+" name:"+myname);

    return "main";

}

Servlet手工提取数据

Index.jsp
<br>

<h3>Servlet手工提取数据</h3>

<hr/>

<form action="${pageContext.request.contextPath}/handwork.action">

    i d:<input type="text" name="id"><br>

    姓名:<input type="text" name="name"><br>

    <br>

    <input type="submit" value="submit">

</form>

Servlet类(controller)


@RequestMapping("/handwork")

public String handworkData(HttpServletRequest request){

    String id = request.getParameter("id");

    String name = request.getParameter("name");

    System.out.println("id:"+id+" name:"+name);

    return "main";

}