一、HttpPost上传文件
public static String getSuffix(final MultipartFile file){
if(file == null || file.getSize() == 0){
return null;
}
String fileName = file.getOriginalFilename();
return fileName.substring(fileName.lastIndexOf(".")+1);
}
public static JSONObject uploadFile(String urlStr, MultipartFile file, String token) throws IOException {
// 后缀
String suffix = getSuffix(file);
CloseableHttpClient httpClient = HttpClients.createDefault();
HttpPost uploadFile = new HttpPost(urlStr);
uploadFile.setHeader("authorization","Bearer " + token);
DecimalFormat df = new DecimalFormat("#.##");
MultipartEntityBuilder builder = MultipartEntityBuilder.create();
// HTTP.PLAIN_TEXT_TYPE,HTTP.UTF_8
builder.addTextBody("name", file.getOriginalFilename(), ContentType.create("text/plain", Consts.UTF_8));
builder.addTextBody("size", df.format((double) file.getSize() / 1024), ContentType.TEXT_PLAIN);
builder.addTextBody("suffix", suffix, ContentType.TEXT_PLAIN);
// 把文件加到HTTP的post请求中
// String filepath = "/user/test/123.png"
// File f = new File(filepath);
builder.addBinaryBody(
"file",
file.getInputStream(),
// new FileInputStream(f),
ContentType.APPLICATION_OCTET_STREAM,
file.getOriginalFilename()
);
HttpEntity multipart = builder.build();
uploadFile.setEntity(multipart);
CloseableHttpResponse response = httpClient.execute(uploadFile);
HttpEntity responseEntity = response.getEntity();
String sResponse= EntityUtils.toString(responseEntity, "UTF-8");
JSONObject jsonObject = JSONObject.parseObject(sResponse);
// {"code":1,"data":"7efb19980373dd90f5077576afa7481a","message":""}
// {"code":401,"httpStatus":null,"data":"373656a2-baff-423a-93fb-704f51003509","message":"error"}
return jsonObject;
}复制代码
二、HttpGet对API进行Get请求
两张方式：
1、在URL中拼接
CloseableHttpClient httpClient = HttpClients.createDefault();
String urlStr ="http://abc.com/oss/getUrl?id=" + ossFileId;
HttpGet httpGet = new HttpGet(urlStr);
// 使用Oauth2进行权限验证
httpGet.setHeader("authorization","Bearer 34195fa8-00a6-4288-bda9-7d37541c3a39");
CloseableHttpResponse response = httpClient.execute(httpGet);
HttpEntity responseEntity = response.getEntity();
String sResponse= EntityUtils.toString(responseEntity, "UTF-8");
System.out.println(sResponse);
JSONObject jsonObject = JSONObject.parseObject(sResponse);
System.out.println(jsonObject);复制代码
2、使用参数的方式
CloseableHttpClient httpClient = HttpClients.createDefault();
/*
* 由于GET请求的参数都是拼装在URL地址后方，所以我们要构建一个URL，带参数
*/
URIBuilder uriBuilder = new URIBuilder("http://www.baidu.com");
/** 第一种添加参数的形式 */
/*uriBuilder.addParameter("name", "root");
uriBuilder.addParameter("password", "123456");*/
/** 第二种添加参数的形式 */
List list = new LinkedList<>();
BasicNameValuePair param1 = new BasicNameValuePair("name", "root");
BasicNameValuePair param2 = new BasicNameValuePair("password", "123456");
list.add(param1);
list.add(param2);
uriBuilder.setParameters(list);
// 根据带参数的URI对象构建GET请求对象
HttpGet httpGet = new HttpGet(uriBuilder.build());
// 使用Oauth2进行权限验证
httpGet.setHeader("authorization","Bearer 34195fa8-00a6-4288-bda9-7d37541c3a39");
CloseableHttpResponse response = httpClient.execute(httpGet);
HttpEntity responseEntity = response.getEntity();
String sResponse= EntityUtils.toString(responseEntity, "UTF-8");
System.out.println(sResponse);
JSONObject jsonObject = JSONObject.parseObject(sResponse);
System.out.println(jsonObject);复制代码
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