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SOP/doc/docs/files/10104_文件上传.md

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6 years ago
# 文件上传
请求接口时带上文件
## 客户端调用
```java
DemoFileUploadRequest request = new DemoFileUploadRequest();
DemoFileUploadModel model = new DemoFileUploadModel();
model.setRemark("上传文件参数");
request.setBizModel(model);
List<UploadFile> files = new ArrayList<>();
String root = System.getProperty("user.dir");
System.out.println(root);
// 这里演示将resources下的两个文件上传到服务器
files.add(new UploadFile("file1", new File(root + "/src/main/resources/file1.txt")));
files.add(new UploadFile("file2", new File(root + "/src/main/resources/file2.txt")));
request.setFiles(files);
DemoFileUploadResponse response = client.execute(request);
System.out.println("--------------------");
if (response.isSuccess()) {
List<DemoFileUploadResponse.FileMeta> responseFiles = response.getFiles();
System.out.println("您上传的文件信息:");
responseFiles.stream().forEach(file->{
System.out.println(file);
});
} else {
System.out.println("errorCode:" + response.getCode() + ",errorMsg:" + response.getMsg());
}
System.out.println("--------------------");
```
客户端使用`UploadFile`添加上传文件
```java
/**
* @param name 表单名称,不能重复
* @param file 文件
* @throws IOException
*/
public UploadFile(String name, File file) throws IOException {
this(name, file.getName(), FileUtil.toBytes(file));
}
```
其中`name`表示字段名称,相当于`<input type="file" name="file1"/>`中的name
源码详见sop-sdk
## 服务端接收文件
- 方式1
```java
/**
* 方式1:将文件写在参数中,可直接获取。好处是可以校验是否上传
* @param param
* @return
*/
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@Open("file.upload")
@RequestMapping("file1")
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public FileUploadVO file1(FileUploadParam param) {
System.out.println(param.getRemark());
// 获取上传的文件
MultipartFile file1 = param.getFile1();
MultipartFile file2 = param.getFile2();
...
return vo;
}
@Data
public class FileUploadParam {
private String remark;
// 上传文件,字段名称对应表单中的name属性值
@NotNull(message = "文件1不能为空")
private MultipartFile file1;
@NotNull(message = "文件2不能为空")
private MultipartFile file2;
}
```
方式1的好处是可以使用`JSR-303`校验文件是否上传
- 方式2
```java
/**
* 方式2:从request中获取上传文件
*
* @param param
* @return
*/
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@Open("file.upload2")
@RequestMapping("file2")
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public FileUploadVO file2(FileUploadParam2 param, HttpServletRequest request) {
System.out.println(param.getRemark());
FileUploadVO vo = new FileUploadVO();
// 获取上传的文件
Collection<MultipartFile> uploadFiles = UploadUtil.getUploadFiles(request);
...
return vo;
}
```
微服务端源码参考`FileUploadDemoController.java`