Spring Cloud使用Feign实现Form表单提交的示例

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/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

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。