JAVA后端HttpGet访问外部接口

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1.SpringBoot框架测试该接口

    @Autowired
    private ITestService testService;

    @GetMapping("/test")
    public Map test(@RequestParam String name) {
        Map a = null;
        try {
             a = testService.outSideCall(name);
        } catch (Exception e) {
            e.printStackTrace();
        }
        return  a;
    }

2.利用HttpGet访问外部接口url

    @Value("${get_url}")
    private  String path;

    public Map outSideCall (String name)  throws Exception {
        InputStream is = null;
        String body = null;
        StringBuilder   res=new StringBuilder();
        Map returnMap = new HashMap<>();
        String url=path+
                "name="
                +name;
                HttpGet get = new HttpGet(url);
                CloseableHttpClient client = HttpClients.createDefault();
                CloseableHttpResponse response = null;
                try{
                    response = client.execute(get);
                    RequestConfig config = RequestConfig.custom().setConnectTimeout(5000).build();
                    get.setConfig(config);
                    HttpEntity entity = response.getEntity();

                    if(entity != null){
                        is = entity.getContent();
                        //转换为字节输入流
                        BufferedReader br = new BufferedReader(new InputStreamReader(is, Consts.UTF_8));

                        while((body=br.readLine()) != null){
                            res.append(body);
                        }
                    }
                     returnMap = (Map) JSON.parse(res.toString());
                     System.out.println(returnMap);
                } catch (Exception e) {
                    e.printStackTrace();
                }
                    return returnMap;
    }

3配置文件配置好url路径

spring.datasource.url=jdbc:mysql://localhost:3306/mytest?useUnicode=true&characterEncoding=UTF-8
spring.datasource.username=root
spring.datasource.password=123zxcv
spring.datasource.driver-class-name=com.mysql.jdbc.Driver

mybatis.mapper-locations=classpath:mybatis/*.xml


server.port=8083

pagehelper.helperDialect=mysql
pagehelper.reasonable=true
pagehelper.supportMethodsArguments=true
pagehelper.params=count=countSql
//配置路径
get_url=http://www.why.index?