springboot 集成httpclient

源码地址：https://github.com/li5454yong/springboot-httpclient.git
使用Spring集成httpclient时，需要复杂的配置文件spring管理httpclient。而使用SpringBoot来集成httpclient，我们只需要几个注解，一个java文件就能搞定。

pom文件

XHTML

<dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-test</artifactId> <scope>test</scope> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency> <dependency> <groupId>org.apache.httpcomponents</groupId> <artifactId>httpclient</artifactId> <version>4.3.1</version> </dependency>

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        <dependency>

            <groupId>org.springframework.boot</groupId>

            <artifactId>spring-boot-starter</artifactId>

        </dependency>

 

        <dependency>

            <groupId>org.springframework.boot</groupId>

            <artifactId>spring-boot-starter-test</artifactId>

            <scope>test</scope>

        </dependency>

 

        <dependency>

            <groupId>org.springframework.boot</groupId>

            <artifactId>spring-boot-starter-web</artifactId>

        </dependency>

 

        <dependency>

            <groupId>org.apache.httpcomponents</groupId>

            <artifactId>httpclient</artifactId>

            <version>4.3.1</version>

        </dependency>

首先在与SpringBoot主配置同级的目录下建立一个class。

Java

@Configurationpublic class HttpClient { @Value("${http.maxTotal}") private Integer maxTotal; @Value("${http.defaultMaxPerRoute}") private Integer defaultMaxPerRoute; @Value("${http.connectTimeout}") private Integer connectTimeout; @Value("${http.connectionRequestTimeout}") private Integer connectionRequestTimeout; @Value("${http.socketTimeout}") private Integer socketTimeout; @Value("${http.staleConnectionCheckEnabled}") private boolean staleConnectionCheckEnabled; @Bean(name = "httpClientConnectionManager") public PoolingHttpClientConnectionManager getHttpClientConnectionManager(){ PoolingHttpClientConnectionManager httpClientConnectionManager = new PoolingHttpClientConnectionManager(); httpClientConnectionManager.setMaxTotal(maxTotal); httpClientConnectionManager.setDefaultMaxPerRoute(defaultMaxPerRoute); return httpClientConnectionManager; } @Bean(name = "httpClientBuilder") public HttpClientBuilder getHttpClientBuilder(@Qualifier("httpClientConnectionManager")PoolingHttpClientConnectionManager httpClientConnectionManager){ HttpClientBuilder httpClientBuilder = HttpClientBuilder.create(); httpClientBuilder.setConnectionManager(httpClientConnectionManager); return httpClientBuilder; } @Bean public CloseableHttpClient getCloseableHttpClient(@Qualifier("httpClientBuilder") HttpClientBuilder httpClientBuilder){ return httpClientBuilder.build(); } @Bean(name = "builder") public RequestConfig.Builder getBuilder(){ RequestConfig.Builder builder = RequestConfig.custom(); return builder.setConnectTimeout(connectTimeout) .setConnectionRequestTimeout(connectionRequestTimeout) .setSocketTimeout(socketTimeout) .setStaleConnectionCheckEnabled(staleConnectionCheckEnabled); } @Bean public RequestConfig getRequestConfig(@Qualifier("builder") RequestConfig.Builder builder){ return builder.build(); }}

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@Configuration

publicclass HttpClient{

 

    @Value("${http.maxTotal}")

    privateInteger maxTotal;

 

    @Value("${http.defaultMaxPerRoute}")

    privateInteger defaultMaxPerRoute;

 

    @Value("${http.connectTimeout}")

    privateInteger connectTimeout;

 

    @Value("${http.connectionRequestTimeout}")

    privateInteger connectionRequestTimeout;

 

    @Value("${http.socketTimeout}")

    privateInteger socketTimeout;

 

    @Value("${http.staleConnectionCheckEnabled}")

    privateboolean staleConnectionCheckEnabled;

 

    @Bean(name= "httpClientConnectionManager")

    publicPoolingHttpClientConnectionManager getHttpClientConnectionManager(){

        PoolingHttpClientConnectionManagerhttpClientConnectionManager= newPoolingHttpClientConnectionManager();

        httpClientConnectionManager.setMaxTotal(maxTotal);

        httpClientConnectionManager.setDefaultMaxPerRoute(defaultMaxPerRoute);

        returnhttpClientConnectionManager;

    }

 

    @Bean(name= "httpClientBuilder")

    publicHttpClientBuilder getHttpClientBuilder(@Qualifier("httpClientConnectionManager")PoolingHttpClientConnectionManagerhttpClientConnectionManager){

 

        HttpClientBuilderhttpClientBuilder = HttpClientBuilder.create();

 

        httpClientBuilder.setConnectionManager(httpClientConnectionManager);

 

        returnhttpClientBuilder;

    }

 

    @Bean

    publicCloseableHttpClient getCloseableHttpClient(@Qualifier("httpClientBuilder")HttpClientBuilder httpClientBuilder){

        returnhttpClientBuilder.build();

    }

 

 

    @Bean(name= "builder")

    publicRequestConfig.BuildergetBuilder(){

        RequestConfig.Builderbuilder =RequestConfig.custom();

        returnbuilder.setConnectTimeout(connectTimeout)

                .setConnectionRequestTimeout(connectionRequestTimeout)

                .setSocketTimeout(socketTimeout)

                .setStaleConnectionCheckEnabled(staleConnectionCheckEnabled);

    }

 

    @Bean

    publicRequestConfig getRequestConfig(@Qualifier("builder")RequestConfig.Builderbuilder){

        returnbuilder.build();

    }

 

}

具体的http请求方法的封装这里就不在贴出来，大家可以通过上面的源码链接下载到完整的源码。

接下来写一个测试接口。

Java

@RestControllerpublic class HttpClientController { @Resource private HttpAPIService httpAPIService; @RequestMapping("httpclient") public String test() throws Exception { String str = httpAPIService.doGet("http://www.baidu.com"); System.out.println(str); return "hello"; }}

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@RestController

publicclass HttpClientController{

 

    @Resource

    privateHttpAPIService httpAPIService;

 

    @RequestMapping("httpclient")

    publicString test()throws Exception{

        Stringstr =httpAPIService.doGet("http://www.baidu.com");

        System.out.println(str);

        return"hello";

    }

}

在浏览器中访问 http://localhost:8080/httpclient

可以看到后台打印的结果。