嗨森逛服务
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hai-server/hai-service/src/main/java/com/hai/config/CommonConfig.java

169 lines
6.4 KiB

package com.hai.config;
import org.springframework.context.annotation.Configuration;
import sun.font.FontDesignMetrics;
import javax.imageio.ImageIO;
import java.awt.*;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.util.Map;
import java.util.zip.ZipEntry;
import java.util.zip.ZipOutputStream;
/**
* @serviceName QrCodeUtilsConfig.java
* @author Sum1Dream
* @version 1.0.0
* @Description // 工具
* @createTime 09:54 2022/4/13
**/
@Configuration
public class CommonConfig {
//得到该字体字符串的长度
public static int getWordWidth(Font font, String content) {
FontDesignMetrics metrics = FontDesignMetrics.getMetrics(font);
int width = 0;
for (int i = 0; i < content.length(); i++) {
width += metrics.charWidth(content.charAt(i));
}
return width;
}
// 二维码生产自定义图片
public static void overlapImage(String path , String content) throws Exception {
BufferedImage read = ImageIO.read(new File(CommonSysConst.getSysConfig().getFileUrl() + "img/original_image.png"));
Image image = ImageIO.read(new File(CommonSysConst.getSysConfig().getFileUrl() + "/" + path));
Graphics graphics = read.getGraphics();
graphics.drawImage(image, (read.getWidth() - image.getWidth(null))/2 ,306, null);
graphics.setColor(Color.BLACK);
//定义字体
Font font = new Font("微软雅黑", Font.PLAIN, 14);
//计算该字体文本的长度
int wordWidth = CommonConfig.getWordWidth(font, content);
graphics.setFont(font);
graphics.drawString( content, (read.getWidth() - wordWidth)/2 ,304 + image.getHeight(null));
ImageIO.write(read , "png" , new File(CommonSysConst.getSysConfig().getFileUrl() + "/" + path));
}
/**
* 多文件压缩成ZIP
*
* @param imageMap 需要压缩的文件列表,键值对为 <文件名,文件的字节数组>,文件名必须包含后缀
* @param out 压缩文件输出流
* @throws RuntimeException 压缩失败会抛出运行时异常
*/
public static void toZip(Map<String, byte[]> imageMap, OutputStream out) throws RuntimeException {
long start = System.currentTimeMillis();
try (ZipOutputStream zos = new ZipOutputStream(out)) {
for (Map.Entry<String, byte[]> map : imageMap.entrySet()) {
zos.putNextEntry(new ZipEntry(map.getKey()));
zos.write(map.getValue());
zos.closeEntry();
}
long end = System.currentTimeMillis();
System.out.println("压缩完成,耗时:" + (end - start) + " ms");
} catch (Exception e) {
throw new RuntimeException("zip error from ZipUtils", e);
}
}
/**
*
* 文件夹压缩成ZIP
*
* @param srcDir 压缩文件夹路径
* @param out 压缩文件输出流
* @param keepDirStructure 是否保留原来的目录结构,true:保留目录结构;
*
* false:所有文件跑到压缩包根目录下(注意:不保留目录结构可能会出现同名文件,会压缩失败)
*
* @throws RuntimeException 压缩失败会抛出运行时异常
*
*/
public static void toZip(String srcDir, OutputStream out, boolean keepDirStructure)
throws RuntimeException {
long start = System.currentTimeMillis();
ZipOutputStream zos = null;
try {
zos = new ZipOutputStream(out);
File sourceFile = new File(srcDir);
compress(sourceFile, zos, sourceFile.getName(), keepDirStructure);
long end = System.currentTimeMillis();
System.out.println("压缩完成,耗时:" + (end - start) + " ms");
} catch (Exception e) {
throw new RuntimeException("zip error from ZipUtils", e);
} finally {
if (zos != null) {
try {
zos.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
}
/**
*
* 递归压缩方法
* @param sourceFile 源文件
* @param zos zip输出流
* @param name 压缩后的名称
* @param keepDirStructure 是否保留原来的目录结构,true:保留目录结构;
*
* false:所有文件跑到压缩包根目录下(注意:不保留目录结构可能会出现同名文件,会压缩失败)
* @throws Exception
*/
private static void compress(File sourceFile, ZipOutputStream zos, String name, boolean keepDirStructure) throws Exception {
byte[] buf = new byte[2048];
if (sourceFile.isFile()) {
// 向zip输出流中添加一个zip实体,构造器中name为zip实体的文件的名字
zos.putNextEntry(new ZipEntry(name));
// copy文件到zip输出流中
int len;
FileInputStream in = new FileInputStream(sourceFile);
while ((len = in.read(buf)) != -1) {
zos.write(buf, 0, len);
}
// Complete the entry
zos.closeEntry();
in.close();
} else {
File[] listFiles = sourceFile.listFiles();
if (listFiles == null || listFiles.length == 0) {
// 需要保留原来的文件结构时,需要对空文件夹进行处理
if (keepDirStructure) {
// 空文件夹的处理
zos.putNextEntry(new ZipEntry(name + "/"));
// 没有文件,不需要文件的copy
zos.closeEntry();
}
} else {
for (File file : listFiles) {
// 判断是否需要保留原来的文件结构
if (keepDirStructure) {
// 注意:file.getName()前面需要带上父文件夹的名字加一斜杠,
// 不然最后压缩包中就不能保留原来的文件结构,即:所有文件都跑到压缩包根目录下了
compress(file, zos, name + "/" + file.getName(), keepDirStructure);
} else {
compress(file, zos, file.getName(), keepDirStructure);
}
}
}
}
}
}