你好,我正在使用 Spring Boot 和 AngularJs 编写一个 Web 应用程序,需要一个简单的文件上传,但目前无法正常工作。
我已经读到,当 mvc 依赖项存在时,Spring Boot 应该自动配置分段上传本身。
从 :https://spring.io/guides/gs/uploading-files/ https://spring.io/guides/gs/uploading-files/
作为自动配置 Spring MVC 的一部分,Spring Boot 将创建一个 MultipartConfigElement bean 并为文件上传做好准备。
发送请求的 Javascript 函数:
var postFormData = function (file, url, successCallback, errorCallback, progressCallback) {
var xhr = new XMLHttpRequest(),
formData = new FormData();
formData.append("file", file);
xhr.onreadystatechange = function () {
if (xhr.readyState === 4) {
if (xhr.status === 200) {
successCallback(xhr.status); //File is Uploaded
} else {
errorCallback(xhr.status);
}
}
};
function progress(evt) {
if (evt.lengthComputable) {
var percentComplete = evt.loaded / evt.total;
progressCallback(percentComplete);
} else {
progressCallback(evt.loaded);
}
}
xhr.open("POST", url, true);
//xhr.setRequestHeader("Content-Type", "multipart/form-data");
xhr.addEventListener("progress", progress, false);
xhr.send(formData);
}
我的主应用程序类中的多部分配置 Bean:
@Bean
MultipartConfigElement multipartConfigElement() {
MultipartConfigFactory factory = new MultipartConfigFactory();
factory.setMaxFileSize(MAXIMUM_FILE_SIZE);
factory.setMaxRequestSize(MAXIMUM_FILE_SIZE);
return factory.createMultipartConfig();
}
上传控制器:
@Controller
@RequestMapping("/api")
public class FileUploadController {
@Autowired
UserRepository userRepository;
@Autowired
VolumeMetaRepository volumeMetaRepository;
/**
* Handles File upload of volumedata
*
* @param file Must not be null
**/
@RequestMapping(value = "/volumedata/meta/test", consumes= "multipart/form-data", method=RequestMethod.POST)
@ResponseBody
public void handleFileUpload(
@RequestParam("file") MultipartFile file) {
if (!file.isEmpty()) {
/* try {
InputStream fileStream = file.getInputStream();
OutputStream out = new FileOutputStream(file.getOriginalFilename());
IOUtils.copy(fileStream, out);
} catch (IOException e) {
throw new IllegalStateException("Error uploading file.", e);
}*/
/* String filePath = request.getServletContext().getRealPath("/");
try {
file.transferTo(new File(filePath+ "/" + file.getOriginalFilename()));
} catch (IOException e) {
e.printStackTrace();
}*/
}
}
因为还有其他 Stackoverflow 线程,所以新的 Spring boot 版本解决了我使用“1.2.2.BUILD-SNAPSHOT”的问题,我的 gradle 依赖项:
version = '1.2.2.BUILD-SNAPSHOT'
dependencies {
compile group: 'org.springframework.boot', name: 'spring-boot-starter-web', version:version
compile group: 'org.springframework.boot', name: 'spring-boot-starter-aop', version:version
compile group: 'org.springframework.boot', name: 'spring-boot-starter-data-jpa', version:version
compile group: 'org.springframework.hateoas', name: 'spring-hateoas', version:'0.16.0.RELEASE'
compile group: 'org.springframework.data', name: 'spring-data-rest-webmvc', version:'2.1.4.RELEASE'
compile group: 'org.springframework.boot', name: 'spring-boot-starter-security', version:version
compile group: 'org.springframework.boot', name: 'spring-boot-starter-data-rest', version:version
compile group: 'commons-io', name: 'commons-io', version:'2.1'
compile group: 'com.fasterxml.jackson.datatype', name: 'jackson-datatype-jsr310', version:'2.3.4'
compile group: 'org.springframework.boot', name: 'spring-boot-starter-integration', version:version
compile group: 'org.springframework.boot', name: 'spring-boot-starter-websocket', version:version
compile group: 'org.springframework.session', name: 'spring-session', version:'1.0.0.BUILD-SNAPSHOT'
compile group: 'org.springframework.data', name: 'spring-data-redis', version:'1.4.1.RELEASE'
compile group: 'redis.clients', name: 'jedis', version:'2.4.2'
compile group: 'org.springframework.boot', name: 'spring-boot-starter-remote-shell', version:version
compile group:'com.google.guava', name:'guava', version:'18.0'
compile files ('lib/vendor/niftijio.jar');
compile("com.h2database:h2")
testCompile(group: 'org.springframework.boot', name: 'spring-boot-starter-test', version:'1.1.6.RELEASE') {
exclude(module: 'commons-logging')
}
testCompile group: 'com.jayway.jsonpath', name: 'json-path', version:'0.9.1'
testCompile 'org.springframework:spring-test:3.2.3.RELEASE'
testCompile 'junit:junit:4.+'
testCompile "org.mockito:mockito-all:1.9.5"
}
抛出的错误是:
{
"timestamp" : "2015-01-19T10:22:53.710Z",
"status" : 400,
"error" : "Bad Request",
"exception" : "org.springframework.web.bind.MissingServletRequestParameterException",
"message" : "Required MultipartFile parameter 'file' is not present",
"path" : "/api/volumedata/meta/test"
}
它告诉我“文件”参数不存在,但我的请求负载显示该参数存在。
Request Payload:
------WebKitFormBoundary40qPAhpvA20pd8V1
Content-Disposition: form-data; name="file"
C:\fakepath\test.gz
------WebKitFormBoundary40qPAhpvA20pd8V1--
有人知道我的配置中缺少什么,或者什么可能导致错误?
提前致谢