Java模擬登錄正方教務(wù)抓取成績、課表、空教室
更新時(shí)間：2022年08月12日 11:00:29 投稿：lijiao
這篇文章主要介紹了Java模擬登錄正方教務(wù)抓取成績、課表、空教室等信息，Java實(shí)現(xiàn)模擬登錄正方教務(wù)抓取成績、課表、空教室，通過HttpClient來模擬瀏覽器請(qǐng)求，Jsoup解析網(wǎng)頁內(nèi)容，感興趣的小伙伴們可以參考一下
本文實(shí)例為大家分享了Java模擬登錄正方教務(wù)抓取成績、課表、空教室等信息，供大家參考，具體內(nèi)容如下
1.Jwgl.java
package com.ican.yueban.jwgl;
import java.io.IOException;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.List;
import java.util.Scanner;
import org.apache.http.HttpResponse;
import org.apache.http.NameValuePair;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.CloseableHttpResponse;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.message.BasicNameValuePair;
import org.jsoup.Jsoup;
import org.jsoup.nodes.Document;
import org.jsoup.select.Elements;
import com.ican.yueban.utils.DateUtils;
import com.ican.yueban.utils.GlobalConstant;
import com.ican.yueban.utils.IOUtils;
import com.ican.yueban.utils.ParseUtils;
public class Jwgl {
private static String stuNumber = "";
private static String stuName = "";
private static String Cookie = "";
private String indexUrl = GlobalConstant.INDEX_URL;
private String secretCodeUrl = GlobalConstant.SECRETCODE_URL;
private String loginUrl = GlobalConstant.LOGIN_URL;
private String mainUrl = GlobalConstant.MAIN_URL;
private String queryClassroomUrl = GlobalConstant.QUERY_CLASSROOM_URL;
private String queryClassroomGnmkdm = GlobalConstant.QUERY_CLASSROOM_GNMKDM;
private String queryStuGradeUrl = GlobalConstant.QUERY_STU_GRADE_URL;
private String queryStuGradeGnmkd = GlobalConstant.QUERY_STU_GRADE_GNMKDM;
private String queryStuCourseUrl = GlobalConstant.QUERY_STU_COURSE_URL;
private String queryStuCourseGnmkd = GlobalConstant.QUERY_STU_COURSE_GNMKDM;
private String xixiaoqu = GlobalConstant.XIXIAOQU;
private String identityStu = GlobalConstant.IDENTITY_STU;
/**
* 登錄功能
*
* @param stuNumber
* @param password
* @return
* @throws Exception
* @throws UnsupportedOperationException
*/
public boolean login(String stuNumber, String password)
throws UnsupportedOperationException, Exception {
this.stuNumber = stuNumber;
// 獲取驗(yàn)證碼
HttpGet secretCodeGet = new HttpGet(secretCodeUrl);
CloseableHttpClient client = HttpClients.createDefault();
CloseableHttpResponse responseSecret = client.execute(secretCodeGet);
// 獲取返回的Cookie
Cookie = responseSecret.getFirstHeader("Set-Cookie").getValue();
String viewState = IOUtils.getViewState(indexUrl, "", "");
// 將驗(yàn)證碼下載到C盤
IOUtils.getSecret(responseSecret.getEntity().getContent(),
"secretCode.png", "c://");
Scanner sc = new Scanner(System.in);
System.out.println("請(qǐng)輸入驗(yàn)證碼：");
// 手動(dòng)填充剛才獲取的驗(yàn)證碼的值
String secret = sc.next().trim();
HttpPost loginPost = new HttpPost(loginUrl);// 創(chuàng)建登錄的Post請(qǐng)求
loginPost.setHeader("Cookie", Cookie);// 帶上第一次請(qǐng)求的Cookie
List<NameValuePair> nameValuePairLogin = new ArrayList<NameValuePair>();// 封裝Post提交參數(shù)
nameValuePairLogin
.add(new BasicNameValuePair("__VIEWSTATE", viewState));// 隱藏表單值
nameValuePairLogin
.add(new BasicNameValuePair("txtUserName", stuNumber));// 學(xué)號(hào)
nameValuePairLogin.add(new BasicNameValuePair("TextBox2", password));// 密碼
nameValuePairLogin.add(new BasicNameValuePair("txtSecretCode", secret));// 驗(yàn)證碼
nameValuePairLogin.add(new BasicNameValuePair("RadioButtonList1",
identityStu));// 身份,默認(rèn)學(xué)生
nameValuePairLogin.add(new BasicNameValuePair("Button1", ""));
nameValuePairLogin.add(new BasicNameValuePair("lbLanguage", ""));
nameValuePairLogin.add(new BasicNameValuePair("hidPdrs", ""));
nameValuePairLogin.add(new BasicNameValuePair("hidsc", ""));
UrlEncodedFormEntity entity = new UrlEncodedFormEntity(
nameValuePairLogin, "GB2312");
loginPost.setEntity(entity);
HttpResponse responseLogin = client.execute(loginPost);
// client1.close();
// 第三步:判斷提交數(shù)據(jù)是否成功，成功返回302
if (responseLogin.getStatusLine().getStatusCode() == 302) {
// 如果提交成功，帶著Cookie請(qǐng)求重定向的main頁面，并獲取學(xué)生姓名
HttpGet mainGet = new HttpGet(mainUrl + stuNumber);
mainGet.setHeader("Cookie", Cookie);
mainGet.setHeader("Referer", loginUrl);
HttpResponse responseMain = client.execute(mainGet);
InputStream is = responseMain.getEntity().getContent();
String html = "";
try {
html = IOUtils.getHtml(is, "GB2312");
} catch (Exception e) {
System.out.println("解析html失??！");
e.printStackTrace();
}
stuName = Jsoup.parse(html).getElementById("xhxm").text();
System.out.println("登錄成功！歡迎您：" + stuName);
client.close();
return true;
} else {
System.out.println("登錄失敗！");
client.close();
return false;
}
}
/**
* 查詢空教室
*
* @throws Exception
*
* @throws Exception
*/
public void queryClassroom(String xiaoqu, String xqj, String sjd)
throws Exception {
CloseableHttpClient client = HttpClients.createDefault();
String newQueryClassrommUrl = queryClassroomUrl + stuNumber + "&xm="
+ stuName + queryClassroomGnmkdm;// 拼接請(qǐng)求的Url
String parseSjd = ParseUtils.parseWeek(sjd);// 解析當(dāng)前節(jié)次對(duì)應(yīng)的字符串
String nowWeek = DateUtils.getWeek() + "";// 獲取當(dāng)前時(shí)間是第幾周
String viewState = IOUtils.getViewState(newQueryClassrommUrl, Cookie,
mainUrl + stuNumber);
// 封裝查詢空教室請(qǐng)求參數(shù)
List<NameValuePair> queryClassroomPair = new ArrayList<NameValuePair>();
queryClassroomPair.add(new BasicNameValuePair("__EVENTTARGET", ""));
queryClassroomPair.add(new BasicNameValuePair("__EVENTARGUMENT", ""));
queryClassroomPair
.add(new BasicNameValuePair("__VIEWSTATE", viewState));
queryClassroomPair.add(new BasicNameValuePair("xiaoq", xiaoqu));// 校區(qū)類型，默認(rèn)西校區(qū)
queryClassroomPair.add(new BasicNameValuePair("jslb", ""));// 教室類別，默認(rèn)為空
queryClassroomPair.add(new BasicNameValuePair("min_zws", "0"));// 最小座位數(shù)，默認(rèn)為0
queryClassroomPair.add(new BasicNameValuePair("max_zws", ""));// 最大座位數(shù)，默認(rèn)為空
queryClassroomPair.add(new BasicNameValuePair("ddlKsz", nowWeek));// 起始周，默認(rèn)當(dāng)前周
queryClassroomPair.add(new BasicNameValuePair("ddlJsz", nowWeek));// 結(jié)束周，默認(rèn)當(dāng)前周
queryClassroomPair.add(new BasicNameValuePair("xqj", xqj));// 星期幾,默認(rèn)當(dāng)天
queryClassroomPair.add(new BasicNameValuePair("ddlDsz", ""));// 單雙周，默認(rèn)
queryClassroomPair.add(new BasicNameValuePair("sjd", parseSjd));// 第幾節(jié)
queryClassroomPair.add(new BasicNameValuePair("Button2", "空教室查詢"));
queryClassroomPair.add(new BasicNameValuePair("xn", "2015-2016"));
queryClassroomPair.add(new BasicNameValuePair("xq", "2"));
queryClassroomPair.add(new BasicNameValuePair("ddlSyXn", "2015-2016"));
queryClassroomPair.add(new BasicNameValuePair("ddlSyxq", "2"));
UrlEncodedFormEntity entityClassroom = new UrlEncodedFormEntity(
queryClassroomPair);
HttpPost queryClassroomPost = new HttpPost(newQueryClassrommUrl);
// newQueryClassrommUrl示例:http://jwgl2.ujn.edu.cn/xxjsjy.aspx?xh=20121214104&xm=XXX&gnmkdm=N121611
queryClassroomPost.setEntity(entityClassroom);
queryClassroomPost.setHeader("Referer", mainUrl + stuNumber);// 設(shè)置頭信息
queryClassroomPost.setHeader("Cookie", Cookie);
HttpResponse responseClassroom = client.execute(queryClassroomPost);
InputStream is = responseClassroom.getEntity().getContent();
String html = IOUtils.getHtml(is, "GB2312");
Document doc = Jsoup.parse(html);
Elements eleClassroom = doc.select("td");
Elements eleInfo = doc.select("#lblbt");
System.out.println(eleInfo.get(0).text());
for (int i = 0; i < eleClassroom.size(); i++) {
// 只打印教室名稱
if (i % 8 == 1) {
System.out.println(eleClassroom.get(i).text());
}
}
client.close();
}
/**
* 重載查詢空教室方法，默認(rèn)時(shí)間，課程節(jié)次的無參數(shù)查詢方法
*
* @throws IOException
* @throws ClientProtocolException
*/
public void queryClassroom() throws ClientProtocolException, IOException,
Exception {
String weekDay = DateUtils.getWeekDay() + "";// 獲取當(dāng)前時(shí)間是星期幾
String sdj = DateUtils.getNowCourse() + "";// 獲取當(dāng)前時(shí)間是第幾節(jié)課
new Jwgl().queryClassroom(xixiaoqu, weekDay, sdj);
}
/**
* 查詢個(gè)人成績方法
*
* @throws ClientProtocolException
* @throws IOException
*/
public void queryStuGrade(String xn, String xq)
throws ClientProtocolException, IOException {
CloseableHttpClient client = HttpClients.createDefault();
String newQueryStuGradeUrl = queryStuGradeUrl + stuNumber + "&xm="
+ stuName + queryStuGradeGnmkd;
HttpPost queryGradePost = new HttpPost(newQueryStuGradeUrl);
String viewState = IOUtils.getViewState(newQueryStuGradeUrl, Cookie,
mainUrl + stuNumber);
// 封裝請(qǐng)求參數(shù)
List<NameValuePair> queryGradePair = new ArrayList<NameValuePair>();
queryGradePair.add(new BasicNameValuePair("__EVENTTARGET", ""));
queryGradePair.add(new BasicNameValuePair("__EVENTARGUMENT", ""));
queryGradePair.add(new BasicNameValuePair("__VIEWSTATE", viewState));
queryGradePair.add(new BasicNameValuePair("hidLanguage", ""));
queryGradePair.add(new BasicNameValuePair("ddlXN", xn));// 學(xué)年
queryGradePair.add(new BasicNameValuePair("ddlXQ", xq));// 學(xué)期
queryGradePair.add(new BasicNameValuePair("ddl_kcxz", ""));
queryGradePair.add(new BasicNameValuePair("btn_xq", "學(xué)期成績"));
queryGradePost.setHeader("Cookie", Cookie);
queryGradePost.setHeader("Referer", mainUrl + stuNumber);
UrlEncodedFormEntity entityGrade = new UrlEncodedFormEntity(
queryGradePair);
queryGradePost.setEntity(entityGrade);
HttpResponse responQueryGradePost = client.execute(queryGradePost);
String gradeHtml = IOUtils.getHtml(responQueryGradePost.getEntity()
.getContent(), "GB2312");
// System.out.println(gradeHtml);
Document gradeDoc = Jsoup.parse(gradeHtml);
Elements eleGrade = gradeDoc.select("td");
// 按需求解析html<td>標(biāo)簽內(nèi)容并輸出
for (int i = 0; i < 7; i++) {
System.out.println(eleGrade.get(i).text());
}
for (int i = 11; i < eleGrade.size(); i = i + 10) {
if (i + 15 < eleGrade.size()) {
System.out.print(eleGrade.get(i).text() + " ");
i = i + 5;
System.out.print(eleGrade.get(i).text());
System.out.println();
}
client.close();
}
}
/**
* 查詢個(gè)人課表方法
*
* @param xnd
* @param xqd
* @throws ClientProtocolException
* @throws IOException
*/
public void queryStuCourse(String xnd, String xqd)
throws ClientProtocolException, IOException {
CloseableHttpClient client = HttpClients.createDefault();
String newQueryStuCourseUrl = queryStuCourseUrl + stuNumber + "&xm="
+ stuName + queryStuCourseGnmkd;
String viewState = IOUtils.getViewState(newQueryStuCourseUrl, Cookie,
mainUrl + stuNumber);
HttpPost queryStuCoursePost = new HttpPost(newQueryStuCourseUrl);
List<NameValuePair> stuCoursePair = new ArrayList<NameValuePair>();
stuCoursePair.add(new BasicNameValuePair("__EVENTTARGET", "xqd"));
stuCoursePair.add(new BasicNameValuePair("__EVENTARGUMENT", ""));
stuCoursePair.add(new BasicNameValuePair("__VIEWSTATE", viewState));
stuCoursePair.add(new BasicNameValuePair("xnd", xnd));
stuCoursePair.add(new BasicNameValuePair("xqd", xqd));
UrlEncodedFormEntity entitySource = new UrlEncodedFormEntity(
stuCoursePair);
queryStuCoursePost.setEntity(entitySource);
queryStuCoursePost.setHeader("Cookie", Cookie);
queryStuCoursePost.setHeader("Referer", mainUrl + stuNumber);
HttpResponse responseStuCourse = client.execute(queryStuCoursePost);
String html = IOUtils.getHtml(responseStuCourse.getEntity()
.getContent(), "GB2312");
Document docCourse = Jsoup.parse(html);
Elements eleCourse = docCourse.select("td");
for (int i = 2; i < eleCourse.size(); i++) {
System.out.print(eleCourse.get(i).text() + " ");
if (i % 9 == 0) {
System.out.println();
}
}
}
public static void main(String[] args) {
Jwgl jw = new Jwgl();
try {
jw.login("這里是學(xué)號(hào)", "這里是密碼");
System.out.println("查詢成績測(cè)試-------");
jw.queryStuGrade("2015-2016", "1");
// 查詢西校區(qū)，周一，第12節(jié)空教室測(cè)試。
// jw.queryClassroom("1", "1", "2");
System.out.println("查詢空教室測(cè)試------");
jw.queryClassroom();
System.out.println("查詢個(gè)人課表測(cè)試-------");
jw.queryStuCourse("2014-2015", "1");
} catch (ClientProtocolException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
} catch (Exception e) {
e.printStackTrace();
}
//QQ:451209214
}
}2.DateUtils.java
?package com.ican.yueban.utils;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;
public class DateUtils {
private static String startDay = GlobalConstant.START_DAY;// 開學(xué)日期
private static String endDay = GlobalConstant.END_DAY;// 放假日期
/**
* 獲取當(dāng)前時(shí)間是第幾節(jié)課，只限8-16點(diǎn)之間,其他時(shí)間默認(rèn)1，2節(jié)課。
*
* @return
*/
public static int getNowCourse() {
SimpleDateFormat df = new SimpleDateFormat("HH:mm:ss");// 設(shè)置日期格式
String nowDate = df.format(new Date());
if (nowDate.startsWith("08") || nowDate.startsWith("09")) {
return 1;// 12節(jié)課。
} else if (nowDate.startsWith("10") || nowDate.startsWith("11")) {
return 2;// 34節(jié)課，以此類推。
} else if (nowDate.startsWith("12") || nowDate.startsWith("13")
|| nowDate.startsWith("14")) {
return 3;
} else if (nowDate.startsWith("15") || nowDate.startsWith("16")) {
return 4;
} else {
return 1;
}
}
/**
* 獲取當(dāng)前時(shí)間是第幾周
*
* @return
*/
public static int getWeek() {
int days = 0;
int nowWeek = 0;
try {
SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd");// 設(shè)置日期格式
String nowDate = df.format(new Date());
int nowDaysBetween = daysBetween(startDay, nowDate) + 1;
days = daysBetween(startDay, endDay);
int x = nowDaysBetween % 7;
if (x == 0) {
nowWeek = nowDaysBetween / 7;
} else {
nowWeek = nowDaysBetween / 7 + 1;
}
} catch (ParseException e) {
System.out.println("輸入的日期不合法，解析日期失敗");
e.printStackTrace();
}
return nowWeek;
}
/**
* 獲取當(dāng)前時(shí)間是星期幾
*
* @return
*/
public static int getWeekDay() {
Calendar cal = Calendar.getInstance();
cal.setTime(new Date());
if (cal.get(Calendar.DAY_OF_WEEK) - 1 == 0) {
return 7;
}
return cal.get(Calendar.DAY_OF_WEEK) - 1;
}
/**
* 計(jì)算兩個(gè)String類型日期之間的天數(shù)
*
* @param startDay
* @param endDay
* @return
* @throws ParseException
*/
public static int daysBetween(String startDay, String endDay)
throws ParseException {
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
Calendar cal = Calendar.getInstance();
cal.setTime(sdf.parse(startDay));
long time1 = cal.getTimeInMillis();
cal.setTime(sdf.parse(endDay));
long time2 = cal.getTimeInMillis();
long between_days = (time2 - time1) / (1000 * 3600 * 24);
return Integer.parseInt(String.valueOf(between_days));
}
/**
* 以yyyy-MM-dd HH:mm:ss格式返回String類型系統(tǒng)時(shí)間
*
* @return
*/
public static String getNowDate() {
SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");// 設(shè)置日期格式
return df.format(new Date());
}
}
3.GlobalConstant.java
?package com.ican.yueban.utils;
/**
* 本系統(tǒng)所有常量定義
*
* @author 宋開宗
*
*/
public interface GlobalConstant {
public static final String START_DAY = "2016-02-29";
public static final String END_DAY = "2016-07-10";
public static final String INDEX_URL = "http://jwgl2.ujn.edu.cn";// 濟(jì)大教務(wù)系統(tǒng)首頁
public static final String SECRETCODE_URL = "http://jwgl2.ujn.edu.cn/CheckCode.aspx";// 驗(yàn)證碼頁面
public static final String LOGIN_URL = "http://jwgl2.ujn.edu.cn/default2.aspx";// 濟(jì)大教務(wù)系統(tǒng)登錄頁
public static final String MAIN_URL = "http://jwgl2.ujn.edu.cn/xs_main.aspx?xh=";// 濟(jì)大教務(wù)系統(tǒng)主頁，菜單頁面
public static final String QUERY_CLASSROOM_URL = "http://jwgl2.ujn.edu.cn/xxjsjy.aspx?xh=";// 濟(jì)大查詢空教室鏈接
public static final String QUERY_CLASSROOM_GNMKDM = "&gnmkdm=N121611";// 濟(jì)大查詢空教室gnmkdm
public static final String QUERY_STU_COURSE_URL = "http://jwgl2.ujn.edu.cn/xskbcx.aspx?xh=";// 濟(jì)大查詢個(gè)人課表鏈接
public static final String QUERY_STU_COURSE_GNMKDM = "&gnmkdm=N121603";// 濟(jì)大查詢個(gè)人課表gnmkdm
public static final String QUERY_STU_GRADE_URL = "http://jwgl2.ujn.edu.cn/xscjcx.aspx?xh=";// 濟(jì)大查詢個(gè)人成績鏈接
public static final String QUERY_STU_GRADE_GNMKDM = "&gnmkdm=N121605";// 濟(jì)大查詢個(gè)人成績gnmkdm
public static final String IDENTITY_STU = "學(xué)生";// 身份：學(xué)生
public static final String XIXIAOQU = "1";// 濟(jì)大西校區(qū)標(biāo)志
public static final String DONGXIAOQU = "2";// 濟(jì)大東校區(qū)標(biāo)志
public static final String ZHANGQIUXIAOQU = "3";// 濟(jì)大章丘校區(qū)標(biāo)志
public static final String CLASS1 = "'1'|'1','0','0','0','0','0','0','0','0'";// 1，2節(jié)
public static final String CLASS2 = "'2'|'0','3','0','0','0','0','0','0','0'";// 3，4節(jié)
public static final String CLASS3 = "'3'|'0','0','5','0','0','0','0','0','0'";// 5，6節(jié)
public static final String CLASS4 = "'4'|'0','0','0','7','0','0','0','0','0'";// 7，8節(jié)
public static final String CLASS5 = "'5'|'0','0','0','0','9','0','0','0','0'";// 8，10節(jié)
public static final String CLASS6 = "'6'|'0','0','0','0','0','11','0','0','0'";// 11，12節(jié)
public static final String CLASS7 = "'7'|'1','3','0','0','0','0','0','0','0'";// 上午
public static final String CLASS8 = "'8'|'0','0','5','7','0','0','0','0','0'";// 下午
public static final String CLASS9 = "'9'|'1','3','5','7','0','0','0','0','0'";// 白天
public static final String CLASS10 = "'10'|'0','0','0','0','9','11','0','0','0'";// 晚上
public static final String CLASS11 = "'11'|'1','3','5','7','9','11','0','0','0'";// 全天
public static final String BTN_XUEQI = "btn_xq";// 學(xué)期成績
public static final String BTN_XUENIAN = "btn_xn";// 學(xué)年成績
public static final String BTN_LINIAN = "btn_zcj";// 歷年成績
public static final String UNIVERSITY_CODE_UJN = "00001";// 濟(jì)南大學(xué)標(biāo)識(shí)代碼
public static final String USER_STATE_N = "1";// 未認(rèn)證
public static final String USER_STATE_Y = "2";// 認(rèn)證通過
public static final String COMMENT_TYPE_NEWTHINGS = "1";// 評(píng)論類型1：新鮮事
public static final String COMMENT_TYPE_INTEREST = "2";// 評(píng)論類型2：興趣活動(dòng)
}
4.IOUtils.java
?package com.ican.yueban.utils;
import java.awt.Rectangle;
import java.awt.image.BufferedImage;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.URL;
import java.net.URLConnection;
import java.util.Iterator;
import javax.imageio.ImageIO;
import javax.imageio.ImageReadParam;
import javax.imageio.ImageReader;
import javax.imageio.stream.ImageInputStream;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.jsoup.Jsoup;
public class IOUtils {
/**
* 指定編碼格式 ，把輸入流轉(zhuǎn)化為字符串
*
* @param is
* @return
* @throws IOException
*/
public static String getHtml(InputStream is, String encoding)
throws IOException {
ByteArrayOutputStream bos = new ByteArrayOutputStream();
byte[] buffer = new byte[1024];
int len = 0;
while ((len = is.read(buffer)) != -1) {
bos.write(buffer, 0, len);
}
is.close();
return new String(bos.toByteArray(), encoding);
}
/**
* 下載圖片
*
* @param urlString
* @param filename
* @param savePath
* @throws Exception
*/
public static void download(String urlString, String filename,
String savePath) throws Exception {
// 構(gòu)造URL
URL url = new URL(urlString);
// 打開連接
URLConnection con = url.openConnection();
// 設(shè)置請(qǐng)求超時(shí)為5s
con.setConnectTimeout(5 * 1000);
// 輸入流
InputStream is = con.getInputStream();
// 1K的數(shù)據(jù)緩沖
byte[] bs = new byte[1024];
// 讀取到的數(shù)據(jù)長度
int len;
// 輸出的文件流
File sf = new File(savePath);
if (!sf.exists()) {
sf.mkdirs();
}
OutputStream os = new FileOutputStream(sf.getPath() + "\\" + filename);
// 開始讀取
while ((len = is.read(bs)) != -1) {
os.write(bs, 0, len);
}
// 完畢，關(guān)閉所有鏈接
os.close();
is.close();
}
/**
* 圖片裁剪工具類
*
* @param src
* @param dest
* @param x
* @param y
* @param w
* @param h
* @throws IOException
*/
public static void cutImage(String src, String dest, int x, int y, int w,
int h) throws IOException {
Iterator iterator = ImageIO.getImageReadersByFormatName("jpg");
ImageReader reader = (ImageReader) iterator.next();
InputStream in = new FileInputStream(src);
ImageInputStream iis = ImageIO.createImageInputStream(in);
reader.setInput(iis, true);
ImageReadParam param = reader.getDefaultReadParam();
Rectangle rect = new Rectangle(x, y, w, h);
param.setSourceRegion(rect);
BufferedImage bi = reader.read(0, param);
ImageIO.write(bi, "jpg", new File(dest));
in.close();
}
/**
* 判斷字符編碼集
*
* @param str
* @return
*/
public static String getEncoding(String str) {
String encode = "GB2312";
try {
if (str.equals(new String(str.getBytes(encode), encode))) {
String s = encode;
return s;
}
} catch (Exception exception) {
}
encode = "ISO-8859-1";
try {
if (str.equals(new String(str.getBytes(encode), encode))) {
String s1 = encode;
return s1;
}
} catch (Exception exception1) {
}
encode = "UTF-8";
try {
if (str.equals(new String(str.getBytes(encode), encode))) {
String s2 = encode;
return s2;
}
} catch (Exception exception2) {
}
encode = "GBK";
try {
if (str.equals(new String(str.getBytes(encode), encode))) {
String s3 = encode;
return s3;
}
} catch (Exception exception3) {
}
return "未知";
}
/**
* 把輸入流轉(zhuǎn)換成圖片---》獲取驗(yàn)證碼
*
* @param is
* @param filename
* @param savePath
* @throws Exception
*/
public static void getSecret(InputStream is, String filename,
String savePath) throws Exception {
// 1K的數(shù)據(jù)緩沖
byte[] bs = new byte[1024];
// 讀取到的數(shù)據(jù)長度
int len;
// 輸出的文件流
File sf = new File(savePath);
if (!sf.exists()) {
sf.mkdirs();
}
OutputStream os = new FileOutputStream(sf.getPath() + "\\" + filename);
// 開始讀取
while ((len = is.read(bs)) != -1) {
os.write(bs, 0, len);
}
// 完畢，關(guān)閉所有鏈接
os.close();
is.close();
}
/**
* 獲取隱藏字段的__VIEWSTATE值
*
* @param url
* @param cookie
* @param referer
* @return
* @throws UnsupportedOperationException
* @throws ClientProtocolException
* @throws IOException
*/
public static String getViewState(String url, String cookie, String referer)
throws UnsupportedOperationException, ClientProtocolException,
IOException {
CloseableHttpClient client = HttpClients.createDefault();
HttpGet getViewState = new HttpGet(url);
getViewState.setHeader("Cookie", cookie);
getViewState.setHeader("Referer", referer);// 設(shè)置頭信息
String s = IOUtils.getHtml(client.execute(getViewState).getEntity()
.getContent(), "GB2312");
String viewstate = Jsoup.parse(s).select("input[name=__VIEWSTATE]")
.val();
client.close();
return viewstate;
}
}
5. ParseUtils.java
?package com.ican.yueban.utils;
public class ParseUtils {
/**
* 獲取課程節(jié)次對(duì)應(yīng)的字符串
* @param course
* @return
*/
public static String parseWeek(String course) {
String sjd="";
int nowCourse = Integer.parseInt(course);
switch (nowCourse) {
case 1:
sjd=GlobalConstant.CLASS1;
break;
case 2:
sjd=GlobalConstant.CLASS2;
break;
case 3:
sjd=GlobalConstant.CLASS3;
break;
case 4:
sjd=GlobalConstant.CLASS4;
break;
case 5:
sjd=GlobalConstant.CLASS5;
break;
case 6:
sjd=GlobalConstant.CLASS6;
break;
case 7:
sjd=GlobalConstant.CLASS7;
break;
case 8:
sjd=GlobalConstant.CLASS8;
break;
case 9:
sjd=GlobalConstant.CLASS9;
break;
case 10:
sjd=GlobalConstant.CLASS10;
break;
case 11:
sjd=GlobalConstant.CLASS11;
break;
default:
sjd=GlobalConstant.CLASS1;
break;
}
return sjd;
}
}
以上就是本文的全部內(nèi)容，希望對(duì)大家的學(xué)習(xí)有所幫助。
相關(guān)文章
這篇文章主要介紹了Java Exception 捕獲和顯示實(shí)例詳解的相關(guān)資料,需要的朋友可以參考下2017-03-03
springBoot項(xiàng)目配置文件加載優(yōu)先級(jí)及同配置覆蓋問題詳解
SpringBoot配置?件可以放置在多種路徑下,不同路徑下的配置優(yōu)先級(jí)有所不同,下面這篇文章主要給大家介紹了關(guān)于springBoot項(xiàng)目配置文件加載優(yōu)先級(jí)及同配置覆蓋問題的相關(guān)資料,需要的朋友可以參考下2023-05-05
這篇文章主要介紹了Spring依賴注入底層原理詳解,??依賴注入是一種設(shè)計(jì)模式,它將對(duì)象之間的依賴關(guān)系從代碼中移除,并由容器來管理這些依賴關(guān)系,依賴注入的主要目的是降低代碼的耦合度,使代碼更加靈活和可維護(hù),需要的朋友可以參考下2023-09-09
Spring Cloud入門教程之Zuul實(shí)現(xiàn)API網(wǎng)關(guān)與請(qǐng)求過濾
這篇文章主要給大家介紹了關(guān)于Spring Cloud入門教程之Zuul實(shí)現(xiàn)API網(wǎng)關(guān)與請(qǐng)求過濾的相關(guān)資料，文中通過示例代碼介紹的非常詳細(xì)，對(duì)大家的學(xué)習(xí)或者工作具有一定的參考學(xué)習(xí)價(jià)值，需要的朋友們下面隨著小編來一起學(xué)習(xí)學(xué)習(xí)吧。2018-05-05
idea同時(shí)打開多個(gè)項(xiàng)目的圖文教程
這篇文章主要給大家介紹了idea同時(shí)打開多個(gè)項(xiàng)目的圖文教程,文章通過圖文結(jié)合的形式給大家講解的非常詳細(xì),對(duì)大家的學(xué)習(xí)或工作有一定的幫助,需要的朋友可以參考下2024-02-02
這篇文章主要介紹了Java中Range函數(shù)的簡單介紹，Java中的range方法用于返回IntStream和LongStream在函數(shù)參數(shù)范圍內(nèi)的順序值2022-07-07
java利用Future實(shí)現(xiàn)多線程執(zhí)行與結(jié)果聚合實(shí)例代碼
這篇文章主要給大家介紹了關(guān)于java利用Future實(shí)現(xiàn)多線程執(zhí)行與結(jié)果聚合的相關(guān)資料,Future模式的核心,去除了主函數(shù)的等待時(shí)間,并使得原本需要等待的時(shí)間段可以用于處理其他業(yè)務(wù)邏輯,需要的朋友可以參考下2021-12-12
這篇文章主要介紹了淺談Java操作符與其優(yōu)先級(jí)，具有一定借鑒價(jià)值，需要的朋友可以了解下。2017-12-12
Spring5新特性之Reactive響應(yīng)式編程
這篇文章主要介紹了Spring5新特性之Reactive響應(yīng)式編程，響應(yīng)式編程是一種編程范式，通用和專注于數(shù)據(jù)流和變化的，并且是異步的，下文更多詳細(xì)內(nèi)容，需要的小伙伴可以參考一下，希望對(duì)你有所幫助2022-03-03
springboot中關(guān)于自動(dòng)建表,無法更新字段的問題
這篇文章主要介紹了springboot中關(guān)于自動(dòng)建表,無法更新字段的問題，具有很好的參考價(jià)值，希望對(duì)大家有所幫助。如有錯(cuò)誤或未考慮完全的地方，望不吝賜教2022-02-02