Spring 控制台运行及RestTemplate实现Eurka负载均衡

spring使用控制台运行方式

spring.main.web-application-type=none
新老版本的配置有点差异


Maven的modules只是实现了一个顺序编译，一次多个项目一起生成而己

通过parent才能真正实现继承，目录关系不顶事

@SpringBootApplication
@EnableDiscoveryClient
@Configuration
public class DemoConsoleApplication implements CommandLineRunner {

    public static void main(String[] args) {
        SpringApplication.run(DemoConsoleApplication.class, args);
    }

    @Bean
    @LoadBalanced
    public RestTemplate restTemplate(){
        return new RestTemplate();
    }

    @Autowired
    RestTemplate restTemplate;

    @Override
    public void run(String... args) throws Exception {
        System.out.println("command line start runing now....");
        HashMap<String,String> pms=new HashMap<>();
        pms.put("a","b");
        pms.put("c","d");

        String ret = restTemplate.execute("http://xx/welcome", HttpMethod.GET, null, new ResponseExtractor<String>() {
            @Override
            public String extractData(ClientHttpResponse clientHttpResponse) throws IOException {
                InputStream aa = clientHttpResponse.getBody();
                String str="";
                BufferedReader reader=new BufferedReader(new InputStreamReader(aa));
                String line="";
                do{
                    line=reader.readLine();
                    str+=line+"\n";
                }while(line!=null);
                return str;
            }
        },pms);

        System.out.println(ret.toString());

    }

}

rest动态请求微服务

下面这种更牛逼，可以使用header/object 传值方式调用

                HashMap<String, String> headerMap = JSON.parseObject(headers, HashMap.class);
                HashMap<String, Object> paramObj = JSON.parseObject(params, HashMap.class);
                MultiValueMap<String, String> mtHeader=new LinkedMultiValueMap<>();
                headerMap.forEach((String k,String v)->{
                        mtHeader.set(k,v);
                });
                HttpEntity<?> entiry = new HttpEntity<HashMap<String, Object>>(paramObj,mtHeader);
                ResponseEntity<String> ret = restTemplate.exchange(url, HttpMethod.POST, entiry, String.class);
                log.info("restTemplate,status={},statuscode={},body={}", ret.getStatusCode(), ret.getStatusCodeValue(), ret.getBody());
                HashMap<String, Object> resultVo = JSON.parseObject(ret.getBody(), HashMap.class);
                //判断是否消费成功
                if (!hasSuccess(resultVo)) {
                    flag = false;
                }