# mytool

**Repository Path**: long1218/mytool

## Basic Information

- **Project Name**: mytool
- **Description**: 工具类
- **Primary Language**: Java
- **License**: Not specified
- **Default Branch**: master
- **Homepage**: None
- **GVP Project**: No

## Statistics

- **Stars**: 0
- **Forks**: 1
- **Created**: 2016-08-17
- **Last Updated**: 2023-01-17

## Categories & Tags

**Categories**: Uncategorized

**Tags**: None

## README

# mytool

[java文件](https://git.oschina.net/long1218/mytool/raw/master/src/test/java/site/immonkey/mytool/MyTest.java)

## 图像处理

### thumbnailator

```java
Thumbnails.of(TEST_DIRECTORY + "Desert.jpg")
    .size(100, 100) // 等比缩放
    .outputFormat("jpg")
    .outputQuality(.5f)
    .toFile(TEST_DIRECTORY + "Desert1.jpg");
```

### ImageMagick, im4java

```java
String imageMagickPath = "D:\\Program Files (x86)\\ImageMagick-6.3.9-Q8";
IdentifyCmd identifyCmd = new IdentifyCmd(false);
IdentifyCmd.setGlobalSearchPath(imageMagickPath);
ArrayListOutputConsumer output = new ArrayListOutputConsumer();
identifyCmd.setOutputConsumer(output);
IMOperation op = new IMOperation();
op.format("%w,%h,%d,%f,%b");
op.addImage(TEST_DIRECTORY + "Desert.jpg");
identifyCmd.run(op);
ArrayList<String> cmdOutput = output.getOutput();
if (cmdOutput.size() > 0) {
    String line = cmdOutput.get(0);
    System.out.printf("图片信息：宽：%spx，高：%spx，所在目录：%s，文件名：%s，文件大小：%s字节 %n", (Object[]) line.split(","));
}

// 生成缩略图
IMOperation op2 = new IMOperation();
op2.addImage(TEST_DIRECTORY + "Desert.jpg");
op2.resize(100, 100);           // 等比
// op2.resize(100, 100, "!");   // 非等比
op2.addImage(TEST_DIRECTORY + "Desert1.jpg");
ConvertCmd cmd = new ConvertCmd(false);
ConvertCmd.setGlobalSearchPath(imageMagickPath);
cmd.run(op2, new Object[0]);
```

## 日期时间处理(commons-lang, commons-lang3)

```java
Date date = DateUtils.parseDate("2008-02-27", new String[] { "yyyy-MM-dd" });
System.out.println(DateFormatUtils.format(date, "yyyy-MM-dd HH:mm:ss SSS"));

date = DateUtils.setHours(date, 23);
date = DateUtils.setMinutes(date, 59);
date = DateUtils.setSeconds(date, 59);
date = DateUtils.setMilliseconds(date, 999);
System.out.println(DateFormatUtils.format(date, "yyyy-MM-dd HH:mm:ss SSS"));

date = DateUtils.addDays(date, 3);
System.out.println(DateFormatUtils.format(date, "yyyy-MM-dd HH:mm:ss SSS"));
```

## IO操作 (commons-io)
```java
// 文件复制
FileInputStream in = new FileInputStream(TEST_DIRECTORY + "Desert.jpg");
FileOutputStream out = new FileOutputStream(TEST_DIRECTORY + "Desert1.jpg");
IOUtils.copy(in, out);
IOUtils.closeQuietly(in);
IOUtils.closeQuietly(out);

// 读取文件
in = new FileInputStream(TEST_DIRECTORY + "test.txt");
//System.out.println(IOUtils.toString(in, "UTF-8"));
System.out.println(new String(IOUtils.toByteArray(in), "UTF-8"));
IOUtils.closeQuietly(in);
```


## Ftp操作(commons-net-ftp)

```java
FTPClient ftp = new FTPClient();
ftp.addProtocolCommandListener(new PrintCommandListener(new PrintWriter(System.err)));
ftp.connect("127.0.0.1", 21);
ftp.login("root", "root");
ftp.changeWorkingDirectory("/");
String[] typeNames = {"file","directory","symbolic link","unknown"};
String name;
System.out.println("文件列表 ：");
FTPFile[] files = ftp.listFiles();
for (FTPFile ftpFile : files) {
    ftpFile.getType();
    name = new String(ftpFile.getName().getBytes("ISO-8859-1"), "UTF-8");
    System.out.println(typeNames[ftpFile.getType()] + " --> " + name);
}

// 上传文件
boolean b = ftp.storeFile("test.txt", new ByteArrayInputStream("hello world!!!\n中文测试".getBytes("UTF-8")));
System.out.println("上传文件：" + (b ? "成功" : "失败"));

// 下载文件
ftp.setFileType(FTPClient.BINARY_FILE_TYPE);
InputStream fileInputStream = ftp.retrieveFileStream("/test.txt");
System.out.println("文件内容：");
System.out.println(IOUtils.toString(fileInputStream, "UTF-8"));

ftp.disconnect();
```

## 获取网络资源(commons-httpclient)

```java
HttpClient httpClient = new HttpClient();
HttpMethod method = new GetMethod("http://www.sina.com");
httpClient.executeMethod(method);
int code = method.getStatusCode();
if (code >= 200 && code < 300) {
    System.out.println("获取成功：" + IOUtils.toString(method.getResponseBodyAsStream(), "UTF-8"));
}

method = new GetMethod("http://tva2.sinaimg.cn/crop.0.0.180.180.1024/a498586cjw1e8qgp5bmzyj2050050aa8.jpg");
httpClient.executeMethod(method);
code = method.getStatusCode();
if (code >= 200 && code < 300) {
    FileOutputStream out = new FileOutputStream(TEST_DIRECTORY + "test.jpg");
    IOUtils.copy(method.getResponseBodyAsStream(), out);
    IOUtils.closeQuietly(out);
    System.out.println("保存文件成功");
}
```

## 二维码处理(com.google.zxing)

### 生成

```java
int width = 300, height = 300;
String text = "0123456789中文测试";
Map<EncodeHintType, Object> hints = new Hashtable<EncodeHintType, Object>();
hints.put(EncodeHintType.CHARACTER_SET, "UTF-8"); // 
hints.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.H); // 容错率
hints.put(EncodeHintType.MARGIN, 10); // 外边框
BitMatrix bitMatrix = new MultiFormatWriter().encode(text, BarcodeFormat.QR_CODE, 300, 300, hints);
BufferedImage image = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);
for (int x = 0; x < width; x++) {
    for (int y = 0; y < height; y++) {
        image.setRGB(x, y, bitMatrix.get(x, y) ? 0 : 0xFFFFFF);
    }
}
FileOutputStream out = new FileOutputStream(TEST_DIRECTORY + "qrcode.jpg");
ImageIO.write(image, "jpg", out);
out.close();
System.out.println("完成");
```

### 读取

```java
BufferedImage image = ImageIO.read(new File(TEST_DIRECTORY + "qrcode.jpg"));
LuminanceSource source = new BufferedImageLuminanceSource(image);
BinaryBitmap bitmap = new BinaryBitmap(new HybridBinarizer(source));
Map<DecodeHintType, Object> hints = new Hashtable<DecodeHintType, Object>();
hints.put(DecodeHintType.CHARACTER_SET, "UTF8");
Result result = new MultiFormatReader().decode(bitmap, hints);
String resultStr = result.getText();
System.out.println(resultStr);
```

>[BufferedImageLuminanceSource 文件地址](https://git.oschina.net/long1218/mytool/raw/master/src/main/java/com/google/zxing/BufferedImageLuminanceSource.java)


## Redis操作(jedis)

```java
Jedis jedis = new Jedis("127.0.0.1", 6379);
//jedis.auth("123456");
jedis.set("key1", "value1");
System.out.println(jedis.get("key1"));
Set<String> keys = jedis.keys("*");
Iterator<String> iterator = keys.iterator();
while (iterator.hasNext()) {
    String key = iterator.next();
    System.out.println(key + " : " + jedis.get(key));
    jedis.del(key);
}
jedis.close();
```

## Sqlite操作(sqlite-jdbc)

```java
Class.forName("org.sqlite.JDBC");
Connection conn = null;
PreparedStatement ps = null;
ResultSet rs = null;
try {
    conn = DriverManager.getConnection("jdbc:sqlite:" + TEST_DIRECTORY + "test.db"); 
    ps = conn.prepareStatement("SELECT * FROM users");
    rs = ps.executeQuery();
    if (rs.next()) {
        System.out.println(rs.getString("name") + "<=====>" + rs.getObject("phone"));
    }
} catch (Exception e) {
    e.printStackTrace();
} finally {
    if (ps != null) ps.close();
    if (rs != null) rs.close();
    if (conn != null) conn.close();
}
```

## Xml解析(Jsoup)

```java
//获取tomcat配置文件的端口地址
Document document = Jsoup.parse(new File(TEST_DIRECTORY + "server.xml"), "utf-8");
Elements selects = document.select("Connector[protocol=HTTP/1.1]");
System.out.println("http端口：" + StringUtils.defaultIfEmpty(selects.attr("port"), "无"));

selects = document.select("Connector[protocol=AJP/1.3]");
System.out.println("ajp端口：" + StringUtils.defaultIfEmpty(selects.attr("port"), "无"));
```

## 验证码生成(kaptcha)

```java
String savePath = TEST_DIRECTORY + "kaptcha.jpg";
Properties prop = new Properties();
InputStream in = this.getClass().getResourceAsStream("/kaptcha.properties");
prop.load(in);
IOUtils.closeQuietly(in);

Config config = new Config(prop);
Producer producer = config.getProducerImpl();
String capText = producer.createText();
BufferedImage image = producer.createImage(capText);
FileOutputStream out = new FileOutputStream(savePath);
ImageIO.write(image, "jpg", out);
out.close();
System.out.printf("验证码：%s，图片地址：%s%n", capText, savePath);
```

>[/kaptcha.properties](https://git.oschina.net/long1218/mytool/raw/master/src/main/resources/kaptcha.properties)

## 数据库操作(commons-dbutils)

```java
String jdbcUrl = "jdbc:sqlite:" + TEST_DIRECTORY + "test.db";
Class.forName("org.sqlite.JDBC");
Connection conn = null;
try {
    conn = DriverManager.getConnection(jdbcUrl);
    
    QueryRunner runner = new QueryRunner();
    Map<String, Object> result = runner.query(conn, "SELECT * FROM users", new MapHandler());
    System.out.println(result);
} catch (SQLException e) {
    e.printStackTrace();
    DbUtils.rollback(conn);
} finally {
    DbUtils.closeQuietly(conn);
}
//-------------------------------------------------------------

SQLiteDataSource dataSource = new SQLiteDataSource();
dataSource.setUrl(jdbcUrl);
QueryRunner runner = new QueryRunner(dataSource);

Map<String, Object> user = runner.query("SELECT * FROM users WHERE user_name=?", new MapHandler(), "test");
System.out.println(user);

List<Map<String, Object>> users = runner.query("SELECT * FROM users", new MapListHandler());
System.out.println(users);

List<String> names = runner.query("SELECT name FROM users", new ColumnListHandler<String>());
System.out.println(names);

Map<String,Map<String,Object>> users2 = runner.query("SELECT * FROM users", new KeyedHandler<String>("name"));
System.out.println(users2);

int ret = runner.update("UPDATE users SET last_login_time=?, last_update_time=? WHERE user_name=?", 
        System.currentTimeMillis(), System.currentTimeMillis(), "test");
System.out.println("更新：" + (ret == 1));
```