java httpclient读取html文件,Java Form表单内多个文件提交请求（使用CloseableHttpClient或OkHttpClient）...

CloseableHttpClient

//实际情况建议使用单例client

CloseableHttpClient httpclient = HttpClients.createDefault();

try {

HttpPost httppost = new HttpPost("http://test.com");

// 需要上传的excel，这里是直接使用poi生成excel

ContentBody excel = newExcelContent("test.xls");

// form内容

HttpEntity reqEntity = MultipartEntityBuilder.create()

.addPart("param1", new StringBody("value1", ContentType.TEXT_PLAIN))

.addPart("param2", new StringBody("value2", ContentType.TEXT_PLAIN))

.addPart("param3", new StringBody("value3", ContentType.TEXT_PLAIN))

.addPart("param4", new StringBody("value4", ContentType.TEXT_PLAIN))

.addPart("file1", excel)

.addPart("file2", new FileBody(new File("xxxx.jpg")))

.addPart("file3", new FileBody(new File("xxxx.txt")))

.build();

httppost.setEntity(reqEntity);

// httppost.setHeader("Referer", "http://test.com");

// httppost.setHeader("Accept-Language", "zh-CN");

// httppost.setHeader("Content-Type", "multipart/form-data; boundary=---------------------------7e4336143e0100;charset=GBK");

// httppost.setHeader("Accept-Encoding", "gzip, deflate");

// httppost.setHeader("Host", "test.com");

// httppost.setHeader("Connection", "Keep-Alive");

// httppost.setHeader("Pragma", "no-cache");

httppost.setHeader("Cookie", "JSESSIONID=xxx; adminid=\"xxx\"");

System.out.println("执行请求： " + httppost.getRequestLine());

try (CloseableHttpResponse response = httpclient.execute(httppost)) {

System.out.println("----------------------------------------");

System.out.println(response.getStatusLine());

HttpEntity resEntity = response.getEntity();

if (resEntity != null) {

System.out.println("响应内容长度：" + resEntity.getContentLength());

System.out.println("响应内容：" + EntityUtils.toString(resEntity, "utf-8"));

}

System.out.println("----------------------------------------");

EntityUtils.consume(resEntity);

}

} finally {

httpclient.close();

}

关于生成excel流的ContentBody：

/**

* 创建excel文件流

*

* @param filename 带后缀的文件名

* @return ContentBody

*/

private ContentBody newExcelContent(String filename) throws IOException {

String[] titles = {"title1","title2","title3","title4","title5","title6"};

String[] data = {"value1","value2","value3","value4","value5","value6"};

// 创建工作薄

HSSFWorkbook workbook = new HSSFWorkbook();

// 创建工作表

HSSFSheet sheet = workbook.createSheet("sheet1");

//写入表头内容

Row titleRow = sheet.createRow(0);

for (int i = 0; i < titles.length; i++) {

Cell cell = titleRow.createCell(i);

cell.setCellValue(titles[i]);

}

//写入内容

Row row = sheet.createRow(1);

for (int cols = 0; cols < data.length; cols++) {

Cell cell = row.createCell(cols);

cell.setCellValue(data[cols]);

}

ByteArrayOutputStream bos = new ByteArrayOutputStream();

//将excel内容写入流

workbook.write(bos);

return new ByteArrayBody(bos.toByteArray(), filename);

}

OkHttpClient

OkHttpClient client = new OkHttpClient().newBuilder().build();

MediaType mediaType = MediaType.parse(" multipart/form-data; boundary=---------------------------7e4336143e0100;charset=GBK");

RequestBody body = new MultipartBody.Builder().setType(MultipartBody.FORM)

.addFormDataPart("param1", "value1")

.addFormDataPart("param2", "value2")

.addFormDataPart("param3", "value3")

.addFormDataPart("param4", "value4")

.addFormDataPart("file1","test.xls",

RequestBody.create(MediaType.parse("application/octet-stream"),

new File("test.xls")))

.addFormDataPart("file2","xxx.jpg",

RequestBody.create(MediaType.parse("application/octet-stream"),

new File("xxx.jpg")))

.addFormDataPart("file3","xxx.txt",

RequestBody.create(MediaType.parse("application/octet-stream"),

new File("xxx.txt")))

.build();

Request request = new Request.Builder()

.url("http://test.com")

.method("POST", body)

.addHeader("Referer", "http://test.com")

.addHeader("Accept-Language", " zh-CN")

.addHeader("Content-Type", " multipart/form-data; boundary=---------------------------7e4336143e0100;charset=GBK")

.addHeader("Accept-Encoding", " gzip, deflate")

.addHeader("Host", "test.com")

.addHeader("Connection", " Keep-Alive")

.addHeader("Pragma", " no-cache")

.addHeader("Cookie", " JSESSIONID=xxx; adminid=\"xxx\"")

.build();

Response response = client.newCall(request).execute();