SpringBoot使用RestTemplate 摘要认证

1. SpringBoot使用RestTempate
2. SpringBoot使用RestTemplate摘要认证
3. SpringBoot使用RestTemplate基础认证
4. SpringBoot使用RestTemplate 调用exchange方法 显示错误信息

pom文件引用

<?xml version="1.0" encoding="UTF-8"?>

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">

    <modelVersion>4.0.0</modelVersion>

    <groupId>com.itstudy</groupId>

    <artifactId>demo</artifactId>

    <version>1.0.0-SNAPSHOT</version>

    <name>demo</name>

    <parent>

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

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

        <version>1.5.9.RELEASE</version>

    </parent>

    <dependencies>

        <dependency>

            <groupId>junit</groupId>

            <artifactId>junit</artifactId>

            <version>4.12</version>

            <scope>test</scope>

        </dependency>

        <dependency>

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

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

        </dependency>

        <dependency>

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

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

        </dependency>

        <dependency>

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

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

            <scope>test</scope>

        </dependency>

        <dependency>

            <groupId>com.alibaba</groupId>

            <artifactId>fastjson</artifactId>

            <version>1.2.30</version>

        </dependency>

        <!-- 需要使用此类库,注意版本问题 -->

        <dependency>

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

            <artifactId>httpclient</artifactId>

            <version>4.5</version>

        </dependency>

    </dependencies>

    <build>

        <plugins>

            <plugin>

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

                <artifactId>spring-boot-maven-plugin</artifactId>

                <executions>

                    <execution>

                        <goals>

                            <goal>repackage</goal>

                        </goals>

                    </execution>

                </executions>

            </plugin>

        </plugins>

    </build>

</project>

配置resttemplate

import org.apache.http.auth.AuthScope;

import org.apache.http.auth.UsernamePasswordCredentials;

import org.apache.http.client.CredentialsProvider;

import org.apache.http.client.HttpClient;

import org.apache.http.impl.client.BasicCredentialsProvider;

import org.apache.http.impl.client.CloseableHttpClient;

import org.apache.http.impl.client.HttpClientBuilder;

import org.apache.http.impl.client.HttpClients;

import org.springframework.context.annotation.Bean;

import org.springframework.context.annotation.Configuration;

import org.springframework.http.client.HttpComponentsClientHttpRequestFactory;

import org.springframework.web.client.RestTemplate;

import java.nio.charset.Charset;

/**

 * RestTemplate配置类

 */

@Configuration

public class RestTemplateConfig {

    @Bean

    public RestTemplate getRestTemplate() {

        String host="ip";

        int port = 8080;

        String realm="realm";

        String userName="admin";

        String password="admin_pwd";

        //摘要认证时使用

        CredentialsProvider credsProvider = new BasicCredentialsProvider();

        credsProvider.setCredentials(new AuthScope(host, port, realm, AuthScope.ANY_SCHEME),

                new UsernamePasswordCredentials(userName, password));

        CloseableHttpClient httpclient = HttpClients.custom().setDefaultCredentialsProvider(credsProvider).build();

        HttpClient client = HttpClientBuilder.create().build();

        RestTemplate restTemplate = new RestTemplate(new HttpComponentsClientHttpRequestFactory(httpclient));

        //支持中文编码

        restTemplate.getMessageConverters().set(1,

                new StringHttpMessageConverter(Charset.forName("UTF-8")));

        return restTemplate;

    }

}

controller中调用

import org.springframework.beans.factory.annotation.Autowired;

import org.springframework.http.*;

import org.springframework.web.bind.annotation.GetMapping;

import org.springframework.web.bind.annotation.RestController;

import org.springframework.web.client.RestTemplate;

@RestController

public class IndexController {

    @Autowired

    private RestTemplate restTemplate;

    @GetMapping("/getjson")

    public void getJson() {

        String http_url = "http://host:port/api?param";

        HttpHeaders headers = new HttpHeaders();

        MediaType type = MediaType.parseMediaType("application/json; charset=UTF-8");

        headers.setContentType(type);

        headers.add("Accept", MediaType.APPLICATION_JSON.toString());

        HttpEntity<String> requestEntity = new HttpEntity<String>("", headers);

        ResponseEntity<String> responseEntity = restTemplate.exchange(http_url, HttpMethod.GET, null, String.class);

        System.out.println(responseEntity.getStatusCode());

        System.out.println(responseEntity.getBody());

    }

}

SpringBoot应用启动

import org.springframework.boot.Banner;

import org.springframework.boot.SpringApplication;

import org.springframework.boot.autoconfigure.SpringBootApplication;

@SpringBootApplication

public class App {

    public static void main(String[] args) {

        SpringApplication app = new SpringApplication(App.class);

        //关闭banner

        app.setBannerMode(Banner.Mode.OFF);

        app.run(args);

    }

}