springmvc /springboot 接收List 入参

怼烎@ 2024-02-19 21:02 37阅读 0赞

第一种方式:使用@ModelAttribute 注解 + 对象接收

1. get 请求 入参为 projectIds=1,2,3

![20190320153150464.png][]

2. @RequestMapping("/analysis") 或者 @GetMapping("/analysis") 使用 @ModelAttribute 注解

@RequestMapping("/analysis")
    public JsonResult queryList (@ModelAttribute PhoneStatisticalAnalysisReq req) {
        List<PhoneStatisticalAnalysis> result = phoneStatisticalAnalysisService.queryAnalysis(req);
        return  JsonResult.ok(result);
    }

3.创建一个请求对象,并提供对应的 get set方法 用于注入 参数值

public class PhoneStatisticalAnalysisReq {
    
        private List<Long> projectIds;
    
        public List<Long> getProjectIds() {
            return projectIds;
        }
    
        public void setProjectIds(List<Long> projectIds) {
            this.projectIds = projectIds;
        }
    
    }

4. 结果

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MzU0OTU3OA_size_16_color_FFFFFF_t_70][]

第二种方式: 使用 @RequestParam 注解接收

1. get 请求

![20190320160047741.png][]

2.@RequestMapping("/analysis") 或者 @GetMapping("/analysis") 使用 @RequestParam("projectIds") 注解中的参数一定要和 请求地址中的参数一致

@RequestMapping("/analysis")
        public JsonResult queryList ( @RequestParam("projectIds")  List<Long> projectIds) {
          ...
        }

传递多个参数

@RequestMapping("/analysis")
     public JsonResult queryList ( @RequestParam("projectIds")  List<Long> projectIds,
                                   @RequestParam("projectId") Integer projectId) {
       ....
        }

3.结果展示

![20190718195801377.png][]

第三种方式:利用数组接收

1. get请求

![20190320161301503.png][]

2. @RequestMapping("/analysis") 或者 @GetMapping("/analysis") 用数组 接收 名称和 请求参数一一对象即可

@RequestMapping("/analysis")
        public JsonResult queryList ( Long[] projectIds, Integer projectId) {
         ....
        }

3. 结果

![20190320161520561.png][]

第四种方式:

1.post方式请求: json 传送 入参 \[1,2,3\]

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3h1OTkwMTI4NjM4_size_16_color_FFFFFF_t_70][]

2. 发送请求 请求参数为 必须加入 @RequestBody List<Long> projectIds 注解

@PostMapping("/analysis")
        public JsonResult queryList (@RequestBody List<Long> projectIds) {
        ....
        }

3.结果

![20190320162719198.png][]

第五种方式: @RequestBody 加 对象 接收

1.post Json 请求

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3h1OTkwMTI4NjM4_size_16_color_FFFFFF_t_70 1][]

2.@RequestBody 加对象

@RequestMapping("/analysis")
        public JsonResult queryList (@RequestBody PhoneStatisticalAnalysisReq req) {
    ....
        }

对象 :

public class PhoneStatisticalAnalysisReq {
    
        private Long projectId;
    
        private List<Long> projectIds;
    
    
        public Long getProjectId() {
            return projectId;
        }
    
        public void setProjectId(Long projectId) {
            this.projectId = projectId;
        }
    
        public List<Long> getProjectIds() {
            return projectIds;
        }
    
        public void setProjectIds(List<Long> projectIds) {
            this.projectIds = projectIds;
        }
    
       
    }

3.结果

![20190320164251829.png][]

第六种方式: 接收list<T>对象

1.请求方式 post json

[
        {
        "projectId":"1",
        "projectIds":[2,3]
        },
        {
        "projectId":"2",
        "projectIds":[4,5]
        }
    ]

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3h1OTkwMTI4NjM4_size_16_color_FFFFFF_t_70 2][]

2. @RequestBody List<PhoneStatisticalAnalysisReq> req

@RequestMapping("/analysis")
        public JsonResult queryList (@RequestBody List<PhoneStatisticalAnalysisReq> req) {
    ....
        }

3. 结果

![20190320165039101.png][]

第七种方式: 利用String 接收然后参数,然后在后台强转

1. get请求

![20190320172614344.png][]

2. 关于强转成list 这里就不做过多赘述

@RequestMapping("/analysis")
        public JsonResult queryList (String  params) {
        ....
        }

3. 结果

![20190320172517863.png][]

来源：[https://blog.csdn.net/xu990128638/article/details/88690402][https_blog.csdn.net_xu990128638_article_details_88690402]

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[20190320160047741.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/01/29/dd3d8bccaa8a4ffeb48930d4968457e6.png
[20190718195801377.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/01/29/77e071fdf68b4d20872a1dd3a53a90e6.png
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[20190320162719198.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/01/29/7741292fe14a4723b60397642e804fd8.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3h1OTkwMTI4NjM4_size_16_color_FFFFFF_t_70 1]: https://image.dandelioncloud.cn/pgy_files/images/2024/01/29/db69e90d8e2e4445899cdd15da36e7ae.png
[20190320164251829.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/01/29/e35efa19de5f4b3fa1efe657cd6d652e.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3h1OTkwMTI4NjM4_size_16_color_FFFFFF_t_70 2]: https://image.dandelioncloud.cn/pgy_files/images/2024/01/29/8de68b28464f44acb38455c6a9939f2f.png
[20190320165039101.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/01/29/430e359b45914105a2e5633ea94de6c2.png
[20190320172614344.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/01/29/404b01e6d9e944c0b05f55211b76a3bd.png
[20190320172517863.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/01/29/29273571ca9a44218f9d23400819883c.png
[https_blog.csdn.net_xu990128638_article_details_88690402]: https://blog.csdn.net/xu990128638/article/details/88690402