一、基本数据准备
1.1 语音材料
最开始采用m4a格式的录音，文件能合并，但是无法正常播放
1.2 获取绝对路径和生成验证码
/**
* 生成验证码
* @param num
* @return
*/
public static String genCode(int num) {
StringBuffer sf = new StringBuffer();
Random random = new Random();
for (int i = 0; i < num; i++) {
int r = random.nextInt(9);
sf.append(r);
}
return sf.toString();
}
/**
* 获取绝对路径
* @param filepath
* @return
*/
public static String getRealPath(String filepath) {
String path = ClassLoader.getSystemResource("").getPath();
if (filepath.endsWith("/") || filepath.endsWith("\\")) {
return path + filepath;
}
return path + "/" + filepath;
}1.3 所需依赖
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-devtools</artifactId>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<optional>true</optional>
</dependency>
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-lang3</artifactId>
</dependency>
<dependency>
<groupId>org.apache.tomcat.embed</groupId>
<artifactId>tomcat-embed-jasper</artifactId>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>jstl</artifactId>
</dependency>
<dependency>
<groupId>taglibs</groupId>
<artifactId>standard</artifactId>
<version>1.1.2</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
</dependencies>二、前后端实现
2.1 页面实现
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
<title>Title</title>
</head>
<body>
<audio src="/data/end.mp3?num=<%=Math.random()%>" autoplay="autoplay" ></audio>
<a href="/code">获取语音验证码</a>
</body>
</html>2.2 controller层
/**
* @author sunyiran
* @date 2018-09-08
*/
@Controller
@RequestMapping("/code")
public class CodeController {
@GetMapping
public String getCode() throws IOException {
String code = CodeUtils.genCode(4);
CodeUtils.getCodeM4a(code);
return "index";
}
}2.3 生成语音文件
public static File getCodeM4a(String code) throws IOException {
File file = new File(getRealPath("/static/data/end.mp3"));
if (file.exists()) {
file.delete();
file.createNewFile();
}
FileOutputStream fos = new FileOutputStream(file);
FileInputStream fis1 = new FileInputStream(getRealPath("/static/data/base.mp3"));
Vector<FileInputStream> v = new Vector<>();
v.add(fis1);
char[] chars = code.toCharArray();
for (char name : chars) {
FileInputStream fis = new FileInputStream(getRealPath("/static/data/"+name+".mp3"));
v.add(fis);
}
Enumeration<FileInputStream> en = v.elements();
SequenceInputStream sis = new SequenceInputStream(en);
int b;
while((b = sis.read())!= -1)
{
fos.write(b);
}
sis.close();
fos.close();
fis1.close();
return file;
}