springMVC接收参数

ゝ一纸荒年。 2024-04-19 07:02 0阅读 0赞

1 接收普通参数

@RequestMapping("commonparams")
        public ModelAndView commonParams(String roleName,String note){
            System.out.println("roleName:" + roleName);
            System.out.println("note:" +  note);
            ModelAndView modelAndView = new ModelAndView();
            modelAndView.setViewName("index");
            return modelAndView;
        }

如果参数过多的话可以封装成一个对象

@RequestMapping("commonparams1")
        public ModelAndView commonParams1(Role role){
            System.out.println("roleName:" + role.getRoleName());
            System.out.println("note:" +  role.getNote());
            ModelAndView modelAndView = new ModelAndView();
            modelAndView.setViewName("index");
            return modelAndView;
        }

2 使用@RequestParam注解获取参数  
如果参数中参数名为role\_name接收参数时用roleName,那么就需要用到@RequestParam了,否则将接收不到参数.

@RequestParam("role_name") String roleName\

3 使用url传递参数

@RequestMapping("/getRole/{id}")
        public ModelAndView pathVariable(@PathVariable("id") Long id){
            System.out.println("id:" + id);
            return new ModelAndView();
        }

4 接收json参数

$(document).ready(function(){
            var data = {
                roleName:'role',
                note:'note',
                pageParams:{
                    start:1,
                    limit:20
                }
            }
            $.post({
                url:"./params/findRoles.do",
                //此处需要告知传递参数类型为JSON,不能缺少
                contentType:"application/json",
                data:JSON.stringify(data),
                success:function(result){
                }
            });
        });

后台接收

public ModelAndView findRoles(@RequestBody RoleParams roleParams){
    	...
    }

5 接收列表数据  
前端js

$(document).ready(function(){
            var idList = [1,2,3];
            $.post({
                url:"./params/deleteRoles.do",
                //将JSON转化为字符串传递
                data:JSON.stringify(idList),
                contentType:"application/json",
                success:function(result){}
            });
        });

后端代码

public ModelAndView deleteRoles(@RequestBody List<Long> idList){
    	.....
    }

接收复杂的列表数据  
前端js

$(document).ready(function(){
            var roleList = [{roleName:'rolename1',note:'note1'},{roleName:'rolename2',note:'note2'},{roleName:'rolename3',note:'note3'}];
            $.post({
                url:"./params/addRoles.do",
                data:JSON.stringify(roleList),
                contentType:"application/json",
                success:function(result){
    
                }
            });
        });

后端代码

public ModelAndView addRoles(@RequestBody List<Role> roleList){
            
    }

6 接收表单序列化数据  
前端代码

<form id="form">
        <table>
            <tr>
                <td>角色名称</td>
                <td><input id="roleName" name="roleName" value=""></td>
            </tr>
            <tr>
                <td>备注</td>
                <td><input id="note" name="note"></td>
            </tr>
            <tr><td></td>
                <td><input id="commit" type="button" value="提交"></td></tr>
        </table>
    </form>
    
    $(document).ready(function(){
            $("#commit").click(function(){
                vat str=$("form").serialize();
                //提交表单
                $.post({
                    url:"./params/commonParamsPojo2.do",
                    data:$("form").serialize(),
                    success:function(result){
    
                    }
                });
            });
        });

后端代码

public ModelAndView addRoles(String roleName,String note){
    
        }