springboot 接收List 入参

﹏ヽ暗。殇╰゛Y 2023-01-11 11:00 326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][]

1.  `2. @RequestMapping("/analysis") 或者 @GetMapping("/analysis") 使用 @ModelAttribute 注解`
2.   
3.  `@RequestMapping("/analysis")`
4.  `public JsonResult queryList (@ModelAttribute PhoneStatisticalAnalysisReq req) {`
5.  `List<PhoneStatisticalAnalysis> result = phoneStatisticalAnalysisService.queryAnalysis(req);`
6.  `return JsonResult.ok(result);`
7.  `}`

1.  `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`
2.  `public class PhoneStatisticalAnalysisReq {`
3.   
4.  `private List<Long> projectIds;`
5.   
6.  `public List<Long> getProjectIds() {`
7.  `return projectIds;`
8.  `}`
9.   
10. `public void setProjectIds(List<Long> projectIds) {`
11. `this.projectIds = projectIds;`
12. `}`
13.  
14. `}`

4. 结果

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3h1OTkwMTI4NjM4_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

1.  `@RequestMapping("/analysis")`
2.  `public JsonResult queryList ( @RequestParam("projectIds") List<Long> projectIds) {`
3.  `...`
4.  `}`

传递多个参数

1.  `@RequestMapping("/analysis")`
2.  `public JsonResult queryList ( @RequestParam("projectIds") List<Long> projectIds,`
3.  `  @RequestParam("projectId") Integer projectId) {`
4.  `....`
5.  `}`

3.结果展示

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3h1OTkwMTI4NjM4_size_16_color_FFFFFF_t_70 1][]

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

1.  `@RequestMapping("/analysis")`
2.  `public JsonResult queryList ( Long[] projectIds, Integer projectId) {`
3.  `....`
4.  `}`

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][]

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

1.  `@PostMapping("/analysis")`
2.  `public JsonResult queryList (@RequestBody List<Long> projectIds) {`
3.  `....`
4.  `}`

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 3][]

2.@RequestBody 加对象

1.  `@RequestMapping("/analysis")`
2.  `public JsonResult queryList (@RequestBody PhoneStatisticalAnalysisReq req) {`
3.  `....`
4.  `}`

对象 :

1.  `public class PhoneStatisticalAnalysisReq {`
2.   
3.  `private Long projectId;`
4.   
5.  `private List<Long> projectIds;`
6.   
7.   
8.  `public Long getProjectId() {`
9.  `return projectId;`
10. `}`
11.  
12. `public void setProjectId(Long projectId) {`
13. `this.projectId = projectId;`
14. `}`
15.  
16. `public List<Long> getProjectIds() {`
17. `return projectIds;`
18. `}`
19.  
20. `public void setProjectIds(List<Long> projectIds) {`
21. `this.projectIds = projectIds;`
22. `}`
23.  
24.  
25. `}`

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 4][]

2. @RequestBody List<PhoneStatisticalAnalysisReq> req

1.  `@RequestMapping("/analysis")`
2.  `public JsonResult queryList (@RequestBody List<PhoneStatisticalAnalysisReq> req) {`
3.  `....`
4.  `}`

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

1.  `@RequestMapping("/analysis")`
2.  `public JsonResult queryList (String params) {`
3.  `....`
4.  `}`

3. 结果

![20190320172517863.png][]

有更多方式 ,欢迎小伙伴们请多多指教 !!!

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[20190320160047741.png]: https://img-blog.csdnimg.cn/20190320160047741.png
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[20190320161301503.png]: https://img-blog.csdnimg.cn/20190320161301503.png
[20190320161520561.png]: https://img-blog.csdnimg.cn/20190320161520561.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3h1OTkwMTI4NjM4_size_16_color_FFFFFF_t_70 2]: https://img-blog.csdnimg.cn/20190320162819526.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3h1OTkwMTI4NjM4,size_16,color_FFFFFF,t_70
[20190320162719198.png]: https://img-blog.csdnimg.cn/20190320162719198.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3h1OTkwMTI4NjM4_size_16_color_FFFFFF_t_70 3]: https://img-blog.csdnimg.cn/20190320163946370.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3h1OTkwMTI4NjM4,size_16,color_FFFFFF,t_70
[20190320164251829.png]: https://img-blog.csdnimg.cn/20190320164251829.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3h1OTkwMTI4NjM4_size_16_color_FFFFFF_t_70 4]: https://img-blog.csdnimg.cn/20190320165102356.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3h1OTkwMTI4NjM4,size_16,color_FFFFFF,t_70
[20190320165039101.png]: https://img-blog.csdnimg.cn/20190320165039101.png
[20190320172614344.png]: https://img-blog.csdnimg.cn/20190320172614344.png
[20190320172517863.png]: https://img-blog.csdnimg.cn/20190320172517863.png