SpringMVC使用Map或MultiValueMap接收前端提交的Form Data或Query String

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在SpringMVC中，可以使用Map或MultiValueMap接收前端提交的Form Data或Query String，省去定义一大堆不同的VO类。直接上代码：

测试中需要依赖到的包：

<dependency><groupId>org.springframework</groupId><artifactId>spring-web</artifactId><version>4.1.2.RELEASE</version></dependency><dependency><groupId>org.springframework</groupId><artifactId>spring-webmvc</artifactId><version>4.1.2.RELEASE</version></dependency><dependency><groupId>com.fasterxml.jackson.core</groupId><artifactId>jackson-core</artifactId><version>2.2.3</version></dependency><dependency><groupId>com.fasterxml.jackson.core</groupId><artifactId>jackson-databind</artifactId><version>2.2.3</version></dependency><dependency><groupId>com.fasterxml.jackson.core</groupId><artifactId>jackson-annotations</artifactId><version>2.2.3</version></dependency>

测试代码：

/** * 测试用Map接收参数 * @author Xu * */@RestController@RequestMapping(value = "/mapParameter/")public class MapParameter {/** * 用Map接收前端提交的Form Data或Query String，如果有相同的参数名，只接收第一个 * @author XuJijun * @param params * @return */@RequestMapping(value = "map")public Map<String, Object> test1(@RequestParam Map<String, Object> params) {Map<String, Object> resultMap = new HashMap<String, Object>();resultMap = params;return resultMap;}/** * 用MultiValueMap接收前端提交的Form Data或Query String，可以接收相同的参数名的值到同一个list中 * @author XuJijun * @param params * @return */@RequestMapping(value = "multiValueMap")public Map<String, List<Object>> test2(@RequestParam MultiValueMap<String, Object> params) {Map<String, List<Object>> resultMap = new HashMap<>();resultMap = params;return resultMap;}/** * 用Map接收前端提交的json格式的Request Payload，如果有相同的参数名，只接收最后一个 * @author XuJijun * @param params * @return */@RequestMapping(value = "jsonParams")public Map<String, Object> test3(@RequestBody Map<String, Object> params) {Map<String, Object> resultMap = new HashMap<String, Object>();resultMap = params;return resultMap;}}

测试结果：

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