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Spring Cloud使用Feign实现Form表单提交的示例

2018-03-28 10:29 986 查看

之前,笔者写了《使用Spring Cloud Feign上传文件》。近日,有同事在对接遗留的Struts古董系统,需要使用Feign实现Form表单提交。其实步骤大同小异,本文附上步骤,算是对之前那篇的补充。

添加依赖:

<dependency>
<groupId>io.github.openfeign.form</groupId>
<artifactId>feign-form</artifactId>
<version>3.2.2</version>
</dependency>
<dependency>
<groupId>io.github.openfeign.form</groupId>
<artifactId>feign-form-spring</artifactId>
<version>3.2.2</version>
</dependency>

Feign Client示例:

@FeignClient(name = "xxx", url = "http://www.itmuch.com/", configuration = TestFeignClient.FormSupportConfig.class)
public interface TestFeignClient {
@PostMapping(value = "/test",
consumes = {MediaType.APPLICATION_FORM_URLENCODED_VALUE},
produces = {MediaType.APPLICATION_JSON_UTF8_VALUE}
)
void post(Map<String, ?> queryParam);
class FormSupportConfig {
@Autowired
private ObjectFactory<HttpMessageConverters> messageConverters;
// new一个form编码器,实现支持form表单提交
@Bean
public Encoder feignFormEncoder() {
return new SpringFormEncoder(new SpringEncoder(messageConverters));
}
// 开启Feign的日志
@Bean
public Logger.Level logger() {
return Logger.Level.FULL;
}
}
}

调用示例:

@GetMapping("/user/{id}")
public User findById(@PathVariable Long id) {
HashMap<String, String> param = Maps.newHashMap();
param.put("username","zhangsan");
param.put("password","pwd");
this.testFeignClient.post(param);
return new User();
}

日志:

...[TestFeignClient#post] ---> POST http://www.baidu.com/test HTTP/1.1
...[TestFeignClient#post] Accept: application/json;charset=UTF-8
...[TestFeignClient#post] Content-Type: application/x-www-form-urlencoded; charset=UTF-8
...[TestFeignClient#post] Content-Length: 30
...[TestFeignClient#post]
...[TestFeignClient#post] password=pwd&username=zhangsan
...[TestFeignClient#post] ---> END HTTP (30-byte body)

由日志可知,此时Feign已能使用Form表单方式提交数据。

参考文档
https://github.com/OpenFeign/feign-form
https://stackoverflow.com/questions/35803093/how-to-post-form-url-encoded-data-with-spring-cloud-feign

以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持脚本之家。

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标签:  Spring Cloud Feign