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错误
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liuzhaotian
+230
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import com.alibaba.fastjson.JSON;
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import com.alibaba.fastjson.JSONArray;
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import com.alibaba.fastjson.JSONObject;
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import org.apache.commons.lang3.StringUtils;
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import java.util.HashMap;
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import java.util.Iterator;
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import java.util.Map;
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import java.util.Base64;
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import java.io.ByteArrayOutputStream;
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import java.util.zip.DataFormatException;
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import java.util.zip.Deflater;
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import java.util.zip.Inflater;
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import java.io.ByteArrayInputStream;
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import java.io.ByteArrayOutputStream;
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import java.io.File;
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import java.io.IOException;
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import java.io.InputStream;
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import java.io.RandomAccessFile;
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import java.nio.ByteBuffer;
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import java.nio.channels.FileChannel;
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import java.util.zip.GZIPInputStream;
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import java.util.zip.GZIPOutputStream;
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import java.util.zip.ZipEntry;
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import java.util.zip.ZipFile;
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public class JsonUtil {
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public static void main(String[] args) throws IOException {
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String jsonData = "{\n" +
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" \"code\": 0,\n" +
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" \"data\": [\n" +
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" {\n" +
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" \"createTime\": 1717053232000,\n" +
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" \"updateTime\": 1717053232000,\n" +
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" \"creator\": \"晨丰科技\",\n" +
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" \"updater\": \"晨丰科技\",\n" +
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" \"deleted\": false,\n" +
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" \"id\": 358,\n" +
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" \"name\": \"2024年5月30日2\",\n" +
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" \"pieceRate\": 0.001,\n" +
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" \"pieceType\": 3,\n" +
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" \"type\": 1,\n" +
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" \"isCustom\": true,\n" +
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" \"isDealer\": false,\n" +
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" \"sort\": 1000,\n" +
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" \"hourCapacity\": 0.001,\n" +
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" \"unit\": \"件\",\n" +
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" \"isEnabled\": true,\n" +
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" \"prepareTime\": 0,\n" +
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" \"description\": \"2024年5月30日2\",\n" +
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" \"organId\": 1\n" +
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" },\n" +
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" {\n" +
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" \"createTime\": 1717053193000,\n" +
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" \"updateTime\": 1717053193000,\n" +
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" \"creator\": \"晨丰科技\",\n" +
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" \"updater\": \"晨丰科技\",\n" +
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" \"deleted\": false,\n" +
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" \"id\": 357,\n" +
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" \"name\": \"2024年5月30日\",\n" +
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" \"pieceRate\": 0.001,\n" +
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" \"pieceType\": 2,\n" +
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" \"type\": 7,\n" +
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" \"isCustom\": true,\n" +
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" \"isDealer\": false,\n" +
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" \"sort\": 1000,\n" +
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" \"hourCapacity\": 0.001,\n" +
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" \"unit\": \"件\",\n" +
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" \"isEnabled\": true,\n" +
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" \"prepareTime\": 0,\n" +
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" \"description\": \"2024年5月30日\",\n" +
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" \"organId\": 1\n" +
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" },\n" +
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" {\n" +
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" \"createTime\": 1716191704000,\n" +
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" \"updateTime\": 1716280724000,\n" +
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" \"creator\": \"晨丰科技\",\n" +
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" \"updater\": \"晨丰科技\",\n" +
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" \"deleted\": false,\n" +
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" \"id\": 355,\n" +
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" \"name\": \"测试编辑dvdvd工序\",\n" +
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" \"pieceRate\": 985,\n" +
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" \"pieceType\": 7,\n" +
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" \"type\": 2,\n" +
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" \"isCustom\": true,\n" +
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" \"isDealer\": false,\n" +
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" \"sort\": 1001,\n" +
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" \"hourCapacity\": 41,\n" +
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" \"unit\": \"亩\",\n" +
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" \"isEnabled\": true,\n" +
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" \"prepareTime\": 0,\n" +
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" \"description\": \"测试test69dvdvd9\",\n" +
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" \"organId\": 1\n" +
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" }\n" +
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" ],\n" +
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" \"msg\": \"\"\n" +
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"}";
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String s = zipString(jsonData);
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System.out.println(s.getBytes());
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System.out.println(s.length());
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System.out.println(jsonData.length());
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String compress = compress(jsonData);
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System.out.println(compress);
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System.out.println(compress.length());
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}
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/**
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* 压缩
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*/
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public static String zipString(String unzipString) {
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/**
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* https://www.yiibai.com/javazip/javazip_deflater.html#article-start
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* 0 ~ 9 压缩等级 低到高
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* public static final int BEST_COMPRESSION = 9; 最佳压缩的压缩级别。
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* public static final int BEST_SPEED = 1; 压缩级别最快的压缩。
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* public static final int DEFAULT_COMPRESSION = -1; 默认压缩级别。
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* public static final int DEFAULT_STRATEGY = 0; 默认压缩策略。
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* public static final int DEFLATED = 8; 压缩算法的压缩方法(目前唯一支持的压缩方法)。
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* public static final int FILTERED = 1; 压缩策略最适用于大部分数值较小且数据分布随机分布的数据。
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* public static final int FULL_FLUSH = 3; 压缩刷新模式，用于清除所有待处理的输出并重置拆卸器。
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* public static final int HUFFMAN_ONLY = 2; 仅用于霍夫曼编码的压缩策略。
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* public static final int NO_COMPRESSION = 0; 不压缩的压缩级别。
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* public static final int NO_FLUSH = 0; 用于实现最佳压缩结果的压缩刷新模式。
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* public static final int SYNC_FLUSH = 2; 用于清除所有未决输出的压缩刷新模式; 可能会降低某些压缩算法的压缩率。
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*/
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//使用指定的压缩级别创建一个新的压缩器。
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Deflater deflater = new Deflater(Deflater.BEST_COMPRESSION);
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//设置压缩输入数据。
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deflater.setInput(unzipString.getBytes());
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//当被调用时，表示压缩应该以输入缓冲区的当前内容结束。
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deflater.finish();
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final byte[] bytes = new byte[256];
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ByteArrayOutputStream outputStream = new ByteArrayOutputStream(256);
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while (!deflater.finished()) {
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//压缩输入数据并用压缩数据填充指定的缓冲区。
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int length = deflater.deflate(bytes);
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outputStream.write(bytes, 0, length);
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}
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//关闭压缩器并丢弃任何未处理的输入。
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deflater.end();
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return Base64.getEncoder().encodeToString(outputStream.toByteArray());
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}
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/**
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* 解压缩
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*/
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public static String unzipString(String zipString) {
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byte[] decode = Base64.getDecoder().decode(zipString);
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//创建一个新的解压缩器 https://www.yiibai.com/javazip/javazip_inflater.html
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Inflater inflater = new Inflater();
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//设置解压缩的输入数据。
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inflater.setInput(decode);
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final byte[] bytes = new byte[256];
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ByteArrayOutputStream outputStream = new ByteArrayOutputStream(256);
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try {
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//finished() 如果已到达压缩数据流的末尾，则返回true。
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while (!inflater.finished()) {
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//将字节解压缩到指定的缓冲区中。
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int length = inflater.inflate(bytes);
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outputStream.write(bytes, 0, length);
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}
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} catch (DataFormatException e) {
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e.printStackTrace();
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return null;
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} finally {
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//关闭解压缩器并丢弃任何未处理的输入。
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inflater.end();
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}
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return outputStream.toString();
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}
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// 使用 GZIP 进行压缩
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public static String compress(String str) throws IOException {
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if (null == str || str.length() <= 0) {
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return str;
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}
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// 创建一个新的输出流
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ByteArrayOutputStream out = new ByteArrayOutputStream();
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// 使用默认缓冲区大小创建新的输出流
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GZIPOutputStream gzip = new GZIPOutputStream(out);
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// 将字节写入此输出流
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gzip.write(str.getBytes("utf-8")); // 因为后台默认字符集有可能是GBK字符集，所以此处需指定一个字符集
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gzip.close();
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// 使用指定的 charsetName，通过解码字节将缓冲区内容转换为字符串
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return out.toString("ISO-8859-1");
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}
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// 解压缩
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public static String unCompress(String str) throws IOException {
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if (null == str || str.length() <= 0) {
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return str;
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}
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// 创建一个新的输出流
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ByteArrayOutputStream out = new ByteArrayOutputStream();
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// 创建一个 ByteArrayInputStream，使用 buf 作为其缓冲 区数组
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ByteArrayInputStream in = new ByteArrayInputStream(str.getBytes("ISO-8859-1"));
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// 使用默认缓冲区大小创建新的输入流
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GZIPInputStream gzip = new GZIPInputStream(in);
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byte[] buffer = new byte[256];
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int n = 0;
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// 将未压缩数据读入字节数组
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while ((n = gzip.read(buffer)) >= 0) {
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out.write(buffer, 0, n);
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}
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// 使用指定的 charsetName，通过解码字节将缓冲区内容转换为字符串
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return out.toString("utf-8");
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}
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}
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