初步完成excel操作类

.idea/jarRepositories.xml

@@ -16,5 +16,10 @@
       <option name="name" value="JBoss Community repository" />
       <option name="url" value="https://repository.jboss.org/nexus/content/repositories/public/" />
     </remote-repository>
+    <remote-repository>
+      <option name="id" value="central" />
+      <option name="name" value="Central Repository" />
+      <option name="url" value="https://maven.aliyun.com/repository/public" />
+    </remote-repository>
   </component>
 </project>

DoubanDataPraserS/DoubanDataPraserS.iml

@@ -13,5 +13,31 @@
     <orderEntry type="sourceFolder" forTests="false" />
     <orderEntry type="library" name="Maven: com.google.code.gson:gson:2.8.6" level="project" />
     <orderEntry type="library" name="Maven: org.projectlombok:lombok:1.18.22" level="project" />
+    <orderEntry type="library" name="Maven: org.apache.poi:poi:5.2.2" level="project" />
+    <orderEntry type="library" name="Maven: commons-codec:commons-codec:1.15" level="project" />
+    <orderEntry type="library" name="Maven: org.apache.commons:commons-collections4:4.4" level="project" />
+    <orderEntry type="library" name="Maven: org.apache.commons:commons-math3:3.6.1" level="project" />
+    <orderEntry type="library" name="Maven: commons-io:commons-io:2.11.0" level="project" />
+    <orderEntry type="library" name="Maven: com.zaxxer:SparseBitSet:1.2" level="project" />
+    <orderEntry type="library" name="Maven: org.apache.logging.log4j:log4j-api:2.17.2" level="project" />
+    <orderEntry type="library" name="Maven: org.apache.poi:poi-ooxml:5.2.2" level="project" />
+    <orderEntry type="library" name="Maven: org.apache.poi:poi-ooxml-lite:5.2.2" level="project" />
+    <orderEntry type="library" name="Maven: org.apache.xmlbeans:xmlbeans:5.0.3" level="project" />
+    <orderEntry type="library" name="Maven: org.apache.commons:commons-compress:1.21" level="project" />
+    <orderEntry type="library" name="Maven: com.github.virtuald:curvesapi:1.07" level="project" />
+    <orderEntry type="library" name="Maven: com.alibaba:easyexcel:3.0.5" level="project" />
+    <orderEntry type="library" name="Maven: org.apache.poi:poi-ooxml-schemas:4.1.2" level="project" />
+    <orderEntry type="library" name="Maven: org.apache.commons:commons-csv:1.8" level="project" />
+    <orderEntry type="library" name="Maven: cglib:cglib:3.3.0" level="project" />
+    <orderEntry type="library" name="Maven: org.ow2.asm:asm:7.1" level="project" />
+    <orderEntry type="library" name="Maven: org.slf4j:slf4j-api:1.7.32" level="project" />
+    <orderEntry type="library" name="Maven: org.ehcache:ehcache:3.8.1" level="project" />
+    <orderEntry type="library" name="Maven: org.glassfish.jaxb:jaxb-runtime:2.3.1" level="project" />
+    <orderEntry type="library" name="Maven: javax.xml.bind:jaxb-api:2.3.1" level="project" />
+    <orderEntry type="library" name="Maven: org.glassfish.jaxb:txw2:2.3.1" level="project" />
+    <orderEntry type="library" name="Maven: com.sun.istack:istack-commons-runtime:3.0.7" level="project" />
+    <orderEntry type="library" name="Maven: org.jvnet.staxex:stax-ex:1.8" level="project" />
+    <orderEntry type="library" name="Maven: com.sun.xml.fastinfoset:FastInfoset:1.2.15" level="project" />
+    <orderEntry type="library" name="Maven: javax.activation:javax.activation-api:1.2.0" level="project" />
   </component>
 </module>

DoubanDataPraserS/pom.xml

@@ -20,12 +20,6 @@
             <version>2.8.6</version>
         </dependency>
 
-        <dependency>
-            <groupId>com.google.code.gson</groupId>
-            <artifactId>gson</artifactId>
-            <version>2.8.6</version>
-        </dependency>
-
         <dependency>
             <groupId>org.projectlombok</groupId>
             <artifactId>lombok</artifactId>
@@ -38,6 +32,18 @@
             <artifactId>poi</artifactId>
             <version>5.2.2</version>
         </dependency>
+        <!-- https://mvnrepository.com/artifact/org.apache.poi/poi -->
+        <dependency>
+            <groupId>org.apache.poi</groupId>
+            <artifactId>poi-ooxml</artifactId>
+            <version>5.2.2</version>
+        </dependency>
+
+        <dependency>
+            <groupId>com.alibaba</groupId>
+            <artifactId>easyexcel</artifactId>
+            <version>3.0.5</version>
+        </dependency>
 
     </dependencies>
 

DoubanDataPraserS/src/main/java/me/lensfrex/doubandps/Main.java

@@ -1,7 +1,48 @@
 package me.lensfrex.doubandps;
 
+import com.google.gson.*;
+import me.lensfrex.doubandps.data.MovieInformation;
+import me.lensfrex.doubandps.utils.IOUtil;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.nio.charset.StandardCharsets;
+import java.util.ArrayList;
+import java.util.logging.Logger;
+
 public class Main {
+    private final static Logger log = Logger.getLogger("MainLogger");
+
     public static void main(String[] args) {
+        new Main().run();
+    }
+
+    // 忙，先这样写吧
+    // todo: 等什么时候稍微有空再改改
+    private void run() {
+        // information不可数，但我就是要数
+        ArrayList<MovieInformation> movieInformations = new ArrayList<>();
+
+        try {
+            InputStream sourceFileStream = getClass().getResourceAsStream("/douban.json");
+            if (sourceFileStream == null) {
+                log.severe("源数据文件不存在，润了，不干了");
+                return;
+            }
 
+            String sourceFileString = IOUtil.inputStreamToString(sourceFileStream, StandardCharsets.UTF_8);
+            JsonArray dataArray = new Gson().fromJson(sourceFileString, JsonArray.class);
+
+            for (int i = 0; i < dataArray.size(); i++) {
+                movieInformations.add(new Gson().fromJson(dataArray.get(i), MovieInformation.class));
+            }
+
+
+
+        } catch (IOException e) {
+            log.severe("读文件出问题啦：" + e.getMessage());
+        } catch (JsonSyntaxException e) {
+            System.err.println("Json文件数据不对捏：" + e.getMessage());
+        }
     }
 }

DoubanDataPraserS/src/main/java/me/lensfrex/doubandps/MovieInformation.java

@@ -1,20 +0,0 @@
-package me.lensfrex.doubandps;
-
-import com.google.gson.annotations.SerializedName;
-import lombok.Data;
-
-@Data
-public class MovieInformation {
-    @SerializedName("name_Ch")
-    private String chineseName;
-
-    @SerializedName("name_Fr")
-    private String frenchName;
-
-    @SerializedName("num")
-    private int id;
-
-    private float point;
-
-    private int year;
-}

DoubanDataPraserS/src/main/java/me/lensfrex/doubandps/data/MovieInformation.java

@@ -0,0 +1,28 @@
+package me.lensfrex.doubandps.data;
+
+import com.alibaba.excel.annotation.ExcelProperty;
+import com.google.gson.annotations.SerializedName;
+import lombok.EqualsAndHashCode;
+import lombok.Getter;
+
+
+@Getter
+@EqualsAndHashCode
+public class MovieInformation {
+    @SerializedName("name_Ch")
+    @ExcelProperty("影片名称")
+    private String chineseName;
+
+    @SerializedName("外文名")
+    private String alienName;
+
+    @ExcelProperty("上映年份")
+    private int year;
+
+    @ExcelProperty("评分")
+    private float point;
+
+    @SerializedName("num")
+    @ExcelProperty("评价人数")
+    private int evaluationAmount;
+}

DoubanDataPraserS/src/main/java/me/lensfrex/doubandps/excel/DataExporter.java

@@ -0,0 +1,9 @@
+package me.lensfrex.doubandps.excel;
+
+import me.lensfrex.doubandps.data.MovieInformation;
+
+public class DataExporter {
+
+    public DataExporter() {
+    }
+}

DoubanDataPraserS/src/main/java/me/lensfrex/doubandps/excel/ExcelWorker.java

@@ -0,0 +1,74 @@
+package me.lensfrex.doubandps.excel;
+
+import com.alibaba.excel.EasyExcel;
+import com.alibaba.excel.ExcelWriter;
+import com.alibaba.excel.write.metadata.WriteSheet;
+
+import java.io.File;
+import java.io.IOException;
+import java.util.ArrayList;
+import java.util.Collection;
+
+/**
+ * 针对特定数据类进行excel操作的Worker操作类
+ * 其中生成的excel中每个sheet的标题都是根据数据类自动生成的
+ *
+ * @param <T> 指定的数据类class
+ */
+public final class ExcelWorker<T> {
+    private final ExcelWriter excelWriter;
+    private final ArrayList<WriteSheet> sheets = new ArrayList<>();
+
+    private int sheetAmount = 0;
+
+    /**
+     * 根据指定的数据对象来构造一个ExcelWorker对象，其中每个sheet的标题都是根据传入的clazz设定的，建议使用空白的文件，防止数据意外覆盖
+     *
+     * @param excelFilePath 欲操作的excel文件
+     * @param clazz         初设定的sheet标题
+     * @throws IOException 如果在初始化操作的时候发生I/O异常
+     */
+    public ExcelWorker(String excelFilePath, Class<T> clazz) throws IOException {
+        File excelFile = new File(excelFilePath);
+        if (!excelFile.exists()) {
+            File parent = excelFile.getParentFile();
+            if (parent.mkdirs()) {
+                parent.createNewFile();
+            }
+        }
+
+        excelWriter = EasyExcel.write(excelFile).head(clazz).build();
+    }
+
+    /**
+     * 根据指定的名字创建一个新的Sheet
+     *
+     * @param sheetName 新的Sheet名字
+     * @return 创建后表格中Sheet数量
+     */
+    public int createNewSheet(String sheetName) {
+        sheets.add(EasyExcel.writerSheet(sheetAmount++, sheetName).build());
+        return sheetAmount;
+    }
+
+    /**
+     * 向指定Index添加数据
+     *
+     * @param sheetIndex 欲添加数据的Sheet的索引
+     * @param source     数据源
+     */
+    public void addAllDataToSheet(int sheetIndex, Collection<T> source) {
+        if (sheetIndex >= sheetAmount) {
+            System.out.println(("sheet索引过大。传入索引：" + sheetIndex + "， 目前sheet总数：" + sheetAmount));
+            return;
+        }
+        excelWriter.write(source, sheets.get(sheetIndex));
+    }
+
+    /**
+     * 结束操作，写入文件
+     */
+    public void finish() {
+        excelWriter.finish();
+    }
+}

DoubanDataPraserS/src/main/java/me/lensfrex/doubandps/utils/IOUtil.java

@@ -1,27 +1,18 @@
 package me.lensfrex.doubandps.utils;
 
-import java.io.ByteArrayOutputStream;
+import java.io.*;
-import java.io.File;
-import java.io.FileOutputStream;
-import java.io.InputStream;
 import java.nio.charset.Charset;
 
 public class IOUtil {
-    public static String inputStreamToString(InputStream inputStream, Charset charSet) {
+    public static String inputStreamToString(InputStream inputStream, Charset charSet) throws IOException {
-        byte[] bytes = readDataFromInputStream(inputStream);
+        return new String(readDataFromInputStream(inputStream), charSet);
-        if (bytes != null) {
-            return new String(bytes, charSet);
-        } else {
-            return null;
-        }
     }
 
-    public static byte[] readDataFromInputStream(InputStream inputStream) {
+    public static byte[] readDataFromInputStream(InputStream inputStream) throws IOException {
         return readDataFromInputStream(inputStream, 5);// read every 5kb in default
     }
 
-    public static byte[] readDataFromInputStream(InputStream inputStream, int byteAllocation) {
+    public static byte[] readDataFromInputStream(InputStream inputStream, int byteAllocation) throws IOException {
-        try {
         ByteArrayOutputStream byteArrayInputStream = new ByteArrayOutputStream();
         byte[] bytes = new byte[1024 * byteAllocation];
 
@@ -35,10 +26,10 @@ public class IOUtil {
         byteArrayInputStream.close();
 
         return byteArrayInputStream.toByteArray();
-        } catch (Exception e) {
-            e.printStackTrace();
-            return null;
     }
+
+    public static byte[] getFileData(String path) throws IOException {
+        return readDataFromInputStream(new FileInputStream(path));
     }
 
     public static void writeFile(byte[] bytes, File file) throws Exception {

DoubanDataPraserS/src/test/java/me/lensfrex/test/Douban.java

@@ -0,0 +1,23 @@
+package me.lensfrex.test;
+
+import com.alibaba.excel.EasyExcel;
+import com.alibaba.excel.ExcelWriter;
+import com.alibaba.excel.annotation.ExcelProperty;
+import com.alibaba.excel.write.metadata.WriteSheet;
+import me.lensfrex.doubandps.utils.IOUtil;
+
+import java.io.File;
+import java.io.IOException;
+import java.nio.charset.StandardCharsets;
+import java.util.ArrayList;
+import java.util.List;
+
+public class Douban {
+    public static void main(String[] args) {
+        new Douban().run();
+    }
+
+    private void run() {
+
+    }
+}