Complete random image service.

list/domain.txt

@@ -0,0 +1 @@
+test.com

list/images.txt

@@ -0,0 +1,11 @@
+http://img.test.com/images/bg-0.jpg
+http://img.test.com/images/bg-1.jpg
+http://img.test.com/images/bg-2.jpg
+http://img.test.com/images/bg-3.jpg
+http://img.test.com/images/bg-4.jpg
+http://img.test.com/images/bg-5.jpg
+http://img.test.com/images/bg-6.jpg
+http://img.test.com/images/bg-7.jpg
+http://img.test.com/images/bg-8.jpg
+http://img.test.com/images/bg-9.jpg
+http://img.test.com/images/bg-10.jpg

pom.xml

@@ -7,54 +7,55 @@
     <groupId>me.ffis</groupId>
     <artifactId>Random-Image-Api</artifactId>
     <version>1.0-SNAPSHOT</version>
+    <packaging>jar</packaging>
+
+    <parent>
+        <groupId>org.springframework.boot</groupId>
+        <artifactId>spring-boot-starter-parent</artifactId>
+        <version>2.2.2.RELEASE</version>
+    </parent>
 
     <properties>
-        <spring.boot.version>2.2.1.RELEASE</spring.boot.version>
+        <java.version>1.8</java.version>
+        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
     </properties>
 
     <dependencies>
         <!--spring-boot 起步依赖-->
         <dependency>
             <groupId>org.springframework.boot</groupId>
             <artifactId>spring-boot-starter-web</artifactId>
-            <version>${spring.boot.version}</version>
         </dependency>
         <!--spring-boot test-->
         <dependency>
             <groupId>org.springframework.boot</groupId>
             <artifactId>spring-boot-starter-test</artifactId>
             <scope>test</scope>
-            <version>${spring.boot.version}</version>
         </dependency>
         <!--logging 日志-->
         <dependency>
             <groupId>org.springframework.boot</groupId>
             <artifactId>spring-boot-starter-logging</artifactId>
-            <version>${spring.boot.version}</version>
+        </dependency>
+        <!-- lombok -->
+        <dependency>
+            <groupId>org.projectlombok</groupId>
+            <artifactId>lombok</artifactId>
         </dependency>
     </dependencies>
 
-
     <!-- 打包插件 -->
     <build>
         <plugins>
             <plugin>
                 <groupId>org.springframework.boot</groupId>
                 <artifactId>spring-boot-maven-plugin</artifactId>
-                <version>${spring.boot.version}</version>
                 <configuration>
                     <!-- 指定该Main Class为全局的唯一入口 -->
                     <mainClass>me.ffis.randomImage.RandomImageApplication</mainClass>
                     <layout>ZIP</layout>
                 </configuration>
-                <executions>
-                    <execution>
-                        <goals>
-                            <!--可以把依赖的包都打包到生成的Jar包中-->
-                            <goal>repackage</goal>
-                        </goals>
-                    </execution>
-                </executions>
             </plugin>
         </plugins>
     </build>

src/main/java/me/ffis/randomImage/config/ReadConfig.java

@@ -0,0 +1,78 @@
+package me.ffis.randomImage.config;
+
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.stereotype.Component;
+
+import java.io.*;
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ * 用于读取图片列表和域名白名单数据
+ * Created by fanfan on 2020/01/05.
+ */
+
+@Slf4j
+@Component
+public class ReadConfig {
+    //创建静态成员变量用于保存图片列表
+    public static List<String> images = new ArrayList<>();
+    //创建静态成员变量用于域名列表
+    public static List<String> domain = new ArrayList<>();
+
+    static {
+        //程序启动的时候先加载图片和域名列表到集合中
+        loadImages();
+        loadDomain();
+    }
+
+    //加载图片列表到images中
+    public static Boolean loadImages() {
+        images.clear();
+        BufferedReader bw = null;
+        try {
+            bw = new BufferedReader(new FileReader("list/images.txt"));
+            String line;
+            while ((line = bw.readLine())!= null) {
+                images.add(line);
+            }
+        } catch (IOException e) {
+            log.error("图片列表加载失败！文件不存在！", e);
+            return false;
+        } finally {
+            try {
+                if (bw != null)
+                    bw.close();
+            } catch (IOException e) {
+                e.printStackTrace();
+            }
+        }
+        log.info("图片加载成功！");
+        return true;
+    }
+
+    //加载域名列表到domain集合中
+    public static Boolean loadDomain() {
+        domain.clear();
+        BufferedReader bw = null;
+        try {
+            bw = new BufferedReader(new FileReader("list/domain.txt"));
+            String line;
+            while ((line = bw.readLine())!= null) {
+                domain.add(line);
+            }
+        } catch (IOException e) {
+            log.error("域名列表加载失败！文件不存在！", e);
+            return false;
+        } finally {
+            try {
+                if (bw != null)
+                    bw.close();
+            } catch (IOException e) {
+                e.printStackTrace();
+            }
+        }
+        log.info("域名加载成功！");
+        return true;
+    }
+}

src/main/java/me/ffis/randomImage/controller/ImageController.java

@@ -0,0 +1,66 @@
+package me.ffis.randomImage.controller;
+
+import lombok.extern.slf4j.Slf4j;
+import me.ffis.randomImage.config.ReadConfig;
+import me.ffis.randomImage.pojo.reponse.ReponseCode;
+import me.ffis.randomImage.pojo.reponse.Result;
+import me.ffis.randomImage.pojo.reponse.ResultResponse;
+import org.springframework.stereotype.Controller;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.ResponseBody;
+
+import javax.servlet.http.HttpServletResponse;
+import java.io.IOException;
+import java.util.List;
+
+/**
+ * Created by fanfan on 2020/01/05.
+ */
+
+@Slf4j
+@Controller
+public class ImageController {
+
+    //获取随机图片
+    @ResponseBody
+    @GetMapping("images")
+    public void getRandomImages(HttpServletResponse response) {
+        //givenList.get((int) (Math.random() * givenList.size()));
+        //根据images集合大小生成随机数
+        int index = (int) (Math.random() * ReadConfig.images.size());
+        //获取随机的图片地址
+        String imgUrl = ReadConfig.images.get(index);
+        try {
+            //重定向到图片地址
+            response.sendRedirect(imgUrl);
+        } catch (IOException e) {
+            log.error("重定向到图片地址失败！", e);
+        }
+    }
+
+    /**
+     * 刷新图片缓存
+     * @return 刷新结果
+     */
+    @ResponseBody
+    @GetMapping("flush")
+    public Result flushCache() {
+        log.info("刷新图片缓存");
+        Boolean imagesflag = ReadConfig.loadImages();
+        Boolean domainflag = ReadConfig.loadDomain();
+
+        if (!imagesflag && !domainflag) {
+            return new ResultResponse(ReponseCode.FLUSH_FAIL);
+        }
+        if (!imagesflag) {
+            return new ResultResponse(ReponseCode.FLUSH_IMAGES_FAIL);
+        }
+        if (!domainflag) {
+            return new ResultResponse(ReponseCode.FLUSH_DOMAIN_FAIL);
+        }
+
+        List<String> domain = ReadConfig.domain;
+        List<String> images = ReadConfig.images;
+        return new ResultResponse(ReponseCode.FLUSH_SUCCESS);
+    }
+}

src/main/java/me/ffis/randomImage/pojo/reponse/ReponseCode.java

@@ -0,0 +1,49 @@
+package me.ffis.randomImage.pojo.reponse;
+
+import lombok.ToString;
+
+/**
+ * 枚举类封装返回常量
+ */
+@ToString
+public enum ReponseCode implements Result {
+    FLUSH_SUCCESS(true, 100, "刷新缓存成功"),
+    FLUSH_FAIL(false, 101, "刷新缓存失败"),
+    FLUSH_IMAGES_FAIL(false, 102, "刷新图片缓存失败"),
+    FLUSH_DOMAIN_FAIL(false, 103, "刷新域名缓存失败");
+
+    //操作是否成功
+    private boolean flag;
+    //操作代码
+    private Integer code;
+    //提示信息
+    private String message;
+    //返回信息
+    private Object data;
+
+    ReponseCode(boolean flag, Integer code, String message) {
+        this.flag = flag;
+        this.code = code;
+        this.message = message;
+    }
+
+    @Override
+    public boolean flag() {
+        return flag;
+    }
+
+    @Override
+    public Integer code() {
+        return code;
+    }
+
+    @Override
+    public String message() {
+        return message;
+    }
+
+    @Override
+    public Object data() {
+        return data;
+    }
+}

src/main/java/me/ffis/randomImage/pojo/reponse/Result.java

@@ -0,0 +1,18 @@
+package me.ffis.randomImage.pojo.reponse;
+
+/**
+ * Created by fanfan on 2019/12/05.
+ */
+public interface Result {
+    //操作是否成功
+    boolean flag();
+
+    //操作代码
+    Integer code();
+
+    //提示信息
+    String message();
+
+    //返回信息
+    Object data();
+}

src/main/java/me/ffis/randomImage/pojo/reponse/ResultResponse.java

@@ -0,0 +1,63 @@
+package me.ffis.randomImage.pojo.reponse;
+
+import lombok.Data;
+import lombok.NoArgsConstructor;
+import lombok.ToString;
+
+/**
+ * Created by fanfan on 2019/12/05.
+ */
+
+@Data
+@ToString
+@NoArgsConstructor
+public class ResultResponse implements Result {
+
+    //操作是否成功
+    private boolean flag;
+    //操作代码
+    private Integer code;
+    //提示信息
+    private String message;
+    //返回数据
+    private Object data;
+
+    public ResultResponse(boolean flag, Integer code, String message) {
+        this.flag = flag;
+        this.code = code;
+        this.message = message;
+    }
+
+    public ResultResponse(Result result) {
+        this.flag = result.flag();
+        this.code = result.code();
+        this.message = result.message();
+    }
+
+    public ResultResponse(Result result, Object data) {
+        this.flag = result.flag();
+        this.code = result.code();
+        this.message = result.message();
+        this.data = data;
+    }
+
+    @Override
+    public boolean flag() {
+        return flag;
+    }
+
+    @Override
+    public Integer code() {
+        return code;
+    }
+
+    @Override
+    public String message() {
+        return message;
+    }
+
+    @Override
+    public Object data() {
+        return data;
+    }
+}