合并分支

web/pom.xml

@@ -46,6 +46,11 @@
             <scope>provided</scope>
         </dependency>
 
+        <dependency>
+            <groupId>org.apache.pdfbox</groupId>
+            <artifactId>pdfbox</artifactId>
+        </dependency>
+
     </dependencies>
 
 </project>

web/src/main/java/com/qn/controller/TestController.java

@@ -1,5 +1,6 @@
 package com.qn.controller;
 
+import org.apache.http.HttpResponse;
 import org.springframework.stereotype.Controller;
 import org.springframework.web.bind.annotation.PathVariable;
 import org.springframework.web.bind.annotation.RequestMapping;
@@ -8,6 +9,7 @@ import org.springframework.web.bind.annotation.RequestMethod;
 import javax.servlet.http.HttpServletResponse;
 import java.io.File;
 import java.io.IOException;
+import java.io.PrintWriter;
 
 @Controller
 public class TestController {
@@ -34,9 +36,10 @@ public class TestController {
     /**
      * 表白
      */
-    @RequestMapping(value = "/image", method = RequestMethod.GET)
-    public void image() throws IOException {
-        File file = new File("/home/type/job");
+    @RequestMapping(value = "/pdf", method = RequestMethod.GET)
+    public void image(HttpServletResponse response) throws IOException {
+        PrintWriter writer = response.getWriter();
+        writer.write("如需下载请先付款！");
     }
 
 }

web/src/main/java/com/qn/controller/utils/PDFUtils.java

@@ -0,0 +1,43 @@
+package com.qn.controller.utils;
+
+import org.apache.pdfbox.pdmodel.PDDocument;
+import org.apache.pdfbox.rendering.PDFRenderer;
+
+import javax.imageio.ImageIO;
+import java.awt.image.BufferedImage;
+import java.io.ByteArrayOutputStream;
+import java.io.File;
+import java.io.FileOutputStream;
+import java.io.IOException;
+
+public class PDFUtils {
+
+    private static final float DPI = 100;
+
+    private static final String IMG_TYPE = "PNG";
+
+    public static void pdfToImg(String filePath) throws IOException {
+        File file = new File(filePath);
+        if (file.exists()){
+            PDDocument document = PDDocument.load(file);
+            PDFRenderer renderer = new PDFRenderer(document);
+            int numberOfPages = document.getNumberOfPages();
+            for (int i = 0; i < numberOfPages; i++){
+                BufferedImage bufferedImage = renderer.renderImageWithDPI(i, DPI);
+                ByteArrayOutputStream out = new ByteArrayOutputStream();
+                ImageIO.write(bufferedImage, IMG_TYPE, out);
+                File imgFile = new File("/Users/limqhz/home/test/pdf/img/" + i + ".png");
+                FileOutputStream outputStream = new FileOutputStream(imgFile);
+                outputStream.write(out.toByteArray());
+                outputStream.close();
+                out.close();
+            }
+        }
+    }
+
+    public static void main(String[] args) throws IOException {
+        PDFUtils.pdfToImg("/Users/limqhz/Downloads/1.pdf");
+    }
+
+
+}