新增文件服务应用

ruoyi-api/ruoyi-api-system/src/main/java/com/ruoyi/system/api/RemoteFileService.java

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+package com.ruoyi.system.api;
+
+import org.springframework.cloud.openfeign.FeignClient;
+import org.springframework.http.MediaType;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestPart;
+import org.springframework.web.multipart.MultipartFile;
+import com.ruoyi.common.core.constant.ServiceNameConstants;
+import com.ruoyi.common.core.domain.R;
+import com.ruoyi.system.api.domain.SysFile;
+import com.ruoyi.system.api.factory.RemoteFileFallbackFactory;
+
+/**
+ * 文件服务
+ * 
+ * @author ruoyi
+ */
+@FeignClient(contextId = "remoteFileService", value = ServiceNameConstants.FILE_SERVICE, fallbackFactory = RemoteFileFallbackFactory.class)
+public interface RemoteFileService
+{
+    /**
+     * 上传文件
+     *
+     * @param file 文件信息
+     * @return 结果
+     */
+    @PostMapping(value = "/upload", consumes = MediaType.MULTIPART_FORM_DATA_VALUE)
+    public R<SysFile> upload(@RequestPart(value = "file") MultipartFile file);
+}

ruoyi-api/ruoyi-api-system/src/main/java/com/ruoyi/system/api/domain/SysFile.java

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+package com.ruoyi.system.api.domain;
+
+import org.apache.commons.lang3.builder.ToStringBuilder;
+import org.apache.commons.lang3.builder.ToStringStyle;
+
+/**
+ * 文件信息
+ * 
+ * @author ruoyi
+ */
+public class SysFile
+{
+    /**
+     * 文件名称
+     */
+    private String name;
+
+    /**
+     * 文件地址
+     */
+    private String url;
+
+    public String getName()
+    {
+        return name;
+    }
+
+    public void setName(String name)
+    {
+        this.name = name;
+    }
+
+    public String getUrl()
+    {
+        return url;
+    }
+
+    public void setUrl(String url)
+    {
+        this.url = url;
+    }
+
+    @Override
+    public String toString() {
+        return new ToStringBuilder(this,ToStringStyle.MULTI_LINE_STYLE)
+            .append("name", getName())
+            .append("url", getUrl())
+            .toString();
+    }
+}

ruoyi-api/ruoyi-api-system/src/main/java/com/ruoyi/system/api/factory/RemoteFileFallbackFactory.java

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+package com.ruoyi.system.api.factory;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.stereotype.Component;
+import org.springframework.web.multipart.MultipartFile;
+import com.ruoyi.common.core.domain.R;
+import com.ruoyi.system.api.RemoteFileService;
+import com.ruoyi.system.api.domain.SysFile;
+import feign.hystrix.FallbackFactory;
+
+/**
+ * 文件服务降级处理
+ * 
+ * @author ruoyi
+ */
+@Component
+public class RemoteFileFallbackFactory implements FallbackFactory<RemoteFileService>
+{
+    private static final Logger log = LoggerFactory.getLogger(RemoteFileFallbackFactory.class);
+
+    @Override
+    public RemoteFileService create(Throwable throwable)
+    {
+        log.error("文件服务调用失败:{}", throwable.getMessage());
+        return new RemoteFileService()
+        {
+            @Override
+            public R<SysFile> upload(MultipartFile file)
+            {
+                return R.fail("上传文件失败:" + throwable.getMessage());
+            }
+        };
+    }
+}