不多说先上 web.xml配置
<?xml version="1.0" encoding="UTF-8"?> <web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" id="WebApp_ID" version="2.5"> <context-param> <param-name>resteasy.resources</param-name> <param-value>com.server.rest.Echo</param-value> </context-param> <context-param> <param-name>resteasy.servlet.mapping.prefix</param-name> <param-value>/rest</param-value> </context-param> <listener> <listener-class> org.jboss.resteasy.plugins.server.servlet.ResteasyBootstrap</listener-class> </listener> <servlet> <servlet-name>resteasy-servlet</servlet-name> <servlet-class> org.jboss.resteasy.plugins.server.servlet.HttpServletDispatcher</servlet-class> </servlet> <servlet-mapping> <servlet-name>resteasy-servlet</servlet-name> <url-pattern>/rest/*</url-pattern> </servlet-mapping> <!-- 将后台接口导出到ajax js到前台 --> <servlet> <servlet-name>RESTEasy-JSAPI</servlet-name> <servlet-class>org.jboss.resteasy.jsapi.JSAPIServlet</servlet-class> </servlet> <servlet-mapping> <servlet-name>RESTEasy-JSAPI</servlet-name> <url-pattern>/restJs.js/*</url-pattern> </servlet-mapping> </web-app>
pom.xml配置
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd"> <modelVersion>4.0.0</modelVersion> <groupId>com.server</groupId> <artifactId>resteasyDemo</artifactId> <packaging>war</packaging> <version>0.0.1-SNAPSHOT</version> <name>resteasyDemo Maven Webapp</name> <url>http://maven.apache.org</url> <repositories> <repository> <id>JBoss repository</id> <url>https://repository.jboss.org/nexus/content/groups/public-jboss/</url> </repository> </repositories> <dependencies> <dependency> <groupId>org.jboss.resteasy</groupId> <artifactId>resteasy-jaxrs</artifactId> <version>2.2.1.GA</version> </dependency> <dependency> <groupId>org.jboss.resteasy</groupId> <artifactId>resteasy-jsapi</artifactId> <version>2.3.1.GA</version> </dependency> <dependency> <groupId>javax.servlet</groupId> <artifactId>servlet-api</artifactId> <version>2.5</version> <scope>provided</scope> </dependency> <dependency> <groupId>commons-codec</groupId> <artifactId>commons-codec</artifactId> <version>1.10</version> </dependency> <dependency> <groupId>junit</groupId> <artifactId>junit</artifactId> <version>3.8.1</version> <scope>test</scope> </dependency> <dependency> <groupId>com.alibaba</groupId> <artifactId>fastjson</artifactId> <version>1.2.7</version> </dependency> </dependencies> <build> <finalName>resteasyDemo</finalName> <plugins> <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-compiler-plugin</artifactId> <configuration> <source>1.6</source> <target>1.6</target> </configuration> </plugin> </plugins> </build> </project>
java类
package com.server.rest; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import javax.servlet.http.HttpSession; import javax.ws.rs.GET; import javax.ws.rs.Path; import javax.ws.rs.PathParam; import javax.ws.rs.QueryParam; import javax.ws.rs.core.Context; import com.alibaba.fastjson.JSON; import com.server.util.SecurityCode; import com.server.util.SecurityImage; import com.server.vo.ResponseResult; @Path(value = "echo") public class Echo { @GET @Path(value = "/{message}") public String echoServicePath(@PathParam("message") String message) { return message; } @GET @Path(value = "/test") public String echoServiceQuery(@QueryParam("test") String test) { ResponseResult resultStr = new ResponseResult(); resultStr.setCode(0); resultStr.setMsg("调用成功"); resultStr.setValue("传入参数："+test); return JSON.toJSONString(resultStr); } @GET @Path(value = "/getPic") public String getPic( @Context HttpServletRequest request, @Context HttpServletResponse response) { HttpSession session = request.getSession(); String securityCode = SecurityCode.getSecurityCode(); session.setAttribute("code", securityCode); String base64Str = "data:image/gif;base64,"+SecurityImage.getImageAsInputStream(securityCode.replaceAll("", " ")); return base64Str; } @GET @Path(value = "/check") public String checkCode( @Context HttpServletRequest request, @Context HttpServletResponse response, @QueryParam("code") String code) { HttpSession session = request.getSession(); String SessionCode = (String) session.getAttribute("code"); ResponseResult resultStr = new ResponseResult(); resultStr.setMsg("调用成功"); resultStr.setValue("传入参数："+code);; if(code.equals(SessionCode)) { resultStr.setCode(0); } else { resultStr.setCode(1); } return JSON.toJSONString(resultStr); } }
验证码校验类
package com.server.util; import java.util.Arrays; /** * 工具类，生成随机验证码字符串 * * @author minxing * */ public class SecurityCode { /** * 验证码难度级别，Simple只包含数字，Medium包含数字和小写英文，Hard包含数字和大小写英文 */ public enum SecurityCodeLevel { Simple, Medium, Hard }; /** * 产生默认验证码，4位中等难度 * * @return String 验证码 */ public static String getSecurityCode() { return getSecurityCode(4, SecurityCodeLevel.Medium, false); } /** * 产生长度和难度任意的验证码 * * @param length * 长度 * @param level * 难度级别 * @param isCanRepeat * 是否能够出现重复的字符，如果为true，则可能出现 5578这样包含两个5,如果为false，则不可能出现这种情况 * @return String 验证码 */ public static String getSecurityCode(int length, SecurityCodeLevel level, boolean isCanRepeat) { // 随机抽取len个字符 int len = length; // 字符集合(除去易混淆的数字0、数字1、字母l、字母o、字母O) char[] codes = { '1', '2', '3', '4', '5', '6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'm', 'n', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z', 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z' }; // 根据不同的难度截取字符数组 if (level == SecurityCodeLevel.Simple) { codes = Arrays.copyOfRange(codes, 0, 9); } else if (level == SecurityCodeLevel.Medium) { codes = Arrays.copyOfRange(codes, 0, 33); } // 字符集合长度 int n = codes.length; // 抛出运行时异常 if (len > n && isCanRepeat == false) { throw new RuntimeException(String.format( "调用SecurityCode.getSecurityCode(%1$s,%2$s,%3$s)出现异常，当isCanRepeat为%3$s时，传入参数%1$s不能大于%4$s", len, level, isCanRepeat, n)); } // 存放抽取出来的字符 char[] result = new char[len]; // 判断能否出现重复的字符 if (isCanRepeat) { for (int i = 0; i < result.length; i++) { // 索引 0 and n-1 int r = (int) (Math.random() * n); // 将result中的第i个元素设置为codes[r]存放的数值 result[i] = codes[r]; } } else { for (int i = 0; i < result.length; i++) { // 索引 0 and n-1 int r = (int) (Math.random() * n); // 将result中的第i个元素设置为codes[r]存放的数值 result[i] = codes[r]; // 必须确保不会再次抽取到那个字符，因为所有抽取的字符必须不相同。 // 因此，这里用数组中的最后一个字符改写codes[r]，并将n减1 codes[r] = codes[n - 1]; n--; } } return String.valueOf(result); } public static void main(String[] args) { System.out.println(getSecurityCode()); } }
package com.server.util; import java.awt.Color; import java.awt.Font; import java.awt.Graphics; import java.awt.Image; import java.awt.image.BufferedImage; import java.io.ByteArrayInputStream; import java.io.ByteArrayOutputStream; import java.io.IOException; import java.io.InputStream; import java.util.Random; import javax.imageio.ImageIO; import javax.imageio.stream.ImageOutputStream; import org.apache.commons.codec.binary.Base64; /** * 验证码生成器类，可生成数字、大写、小写字母及三者混合类型的验证码。 支持自定义验证码字符数量； 支持自定义验证码图片的大小； 支持自定义需排除的特殊字符； * 支持自定义干扰线的数量； 支持自定义验证码图文颜色 * * @author minxing * @version 1.0 */ public class SecurityImage { private static Random random = new Random(); /* * 获得字体 */ public static Font getFont(int fSize) { return new Font("Fixedsys", Font.CENTER_BASELINE, fSize); } /* * 绘制干扰线 */ public static void drowLine(Graphics g, int width, int height) { int x = random.nextInt(width); int y = random.nextInt(height); int xl = random.nextInt(13); int yl = random.nextInt(15); g.drawLine(x, y, x + xl, y + yl); } /* * 获得颜色 */ public static Color getRandColor(int fc, int bc) { if (fc > 255) fc = 255; if (bc > 255) bc = 255; int r = fc + random.nextInt(bc - fc - 16); int g = fc + random.nextInt(bc - fc - 14); int b = fc + random.nextInt(bc - fc - 18); return new Color(r, g, b); } /** * 生成验证码图片 * * @param securityCode * 验证码字符 * @return BufferedImage 图片 */ public static BufferedImage createImage(String securityCode) { // 验证码长度 int codeLength = securityCode.length(); // 字体大小 int fSize = 35; int fWidth = fSize; // 图片宽度 int width = codeLength * fWidth; // 图片高度 int height = fSize * 2; // 图片 BufferedImage image = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB); Graphics g = image.createGraphics(); // 设置背景色 g.setColor(Color.WHITE); // 填充背景 g.fillRect(0, 0, width, height); // 设置边框颜色 g.setColor(Color.LIGHT_GRAY); // 边框字体样式 g.setFont(new Font("Arial", Font.BOLD, height - 2)); // g.setFont(getFont()); // 绘制边框 g.drawRect(0, 0, width - 1, height - 1); // 绘制噪点 // Random rand = new Random(); // 设置噪点颜色 // g.setColor(Color.BLACK); // for (int i = 0; i < codeLength * 6; i++) { // int x = rand.nextInt(width); // int y = rand.nextInt(height); // // 绘制1*1大小的矩形 // g.drawRect(x, y, 1, 1); // } // 绘制干扰线 for (int i = 0; i <= 100; i++) { drowLine(g, width, height); } // 绘制验证码 int codeY = height - 20; // 设置字体颜色和样式 g.setColor(new Color(random.nextInt(101), random.nextInt(111), random.nextInt(121))); g.setFont(getFont(fSize)); for (int i = 0; i < codeLength; i++) { g.drawString(String.valueOf(securityCode.charAt(i)), i * 16 + 5, codeY); } // 关闭资源 g.dispose(); return image; } /** * 返回验证码图片的流格式 * * @param securityCode * 验证码 * @return ByteArrayInputStream 图片流 */ public static String getImageAsInputStream(String securityCode) { BufferedImage image = createImage(securityCode); // 创建储存图片二进制流的输出流 ByteArrayOutputStream baos = new ByteArrayOutputStream(); // 创建ImageOutputStream流 ImageOutputStream imageOutputStream = null; InputStream in = null; try { imageOutputStream = ImageIO.createImageOutputStream(baos); // 将二进制数据写进ByteArrayOutputStream ImageIO.write(image, "jpg", imageOutputStream); in = new ByteArrayInputStream(baos.toByteArray()); } catch (IOException e) { } finally { } return getImageBinary(in); } public static String getImageBinary(InputStream in) { BufferedImage bi; try { bi = ImageIO.read(in); int width = bi.getWidth(); // 得到源图宽 int height = bi.getHeight(); // 得到源图长 System.out.println(width + "---" + height); width = (width) * 7 / 10; height = (height) * 7 / 10; Image image = bi.getScaledInstance(width, height, Image.SCALE_DEFAULT); BufferedImage biNew = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB); Graphics g = biNew.getGraphics(); g.drawImage(image, 0, 0, null); // 绘制缩小后的图 g.dispose(); ByteArrayOutputStream baos = new ByteArrayOutputStream(); ImageIO.write(biNew, "JPEG", baos); byte[] bytes = baos.toByteArray(); return Base64.encodeBase64String(bytes).trim(); } catch (Exception e) { } return null; } public static void main(String[] args) { // String securityCode = SecurityCode.getSecurityCode().replaceAll("", " "); // String base64Str = getImageAsInputStream(securityCode); // System.out.println("data:image/gif;base64," + base64Str); } }
html
<!DOCTYPE html> <html> <head> <title>Bootstrap test</title> <meta charset="UTF-8" /> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <script src="js/jquery-1.12.4.min.js"></script> <script src="restJs.js"></script> <style type="text/css"> .pic{margin:10px auto} .code{height:30px;display:block} .span{font-size:30px;} </style> </head> <body> <h1>Hello, world!</h1> <img class="pic"> <input type="text" class="code"></input> <span></span> </body> <script> $(function() { var picBase64 = Echo.getPic(); $('.pic').attr('src',picBase64); var echoResultPath = Echo.echoServicePath({message:111}); console.log(JSON.stringify(echoResultPath)); var echoResultQuery = Echo.echoServiceQuery({test:"测试"}); console.log(JSON.parse(echoResultQuery)['code']+"---"+JSON.parse(echoResultQuery)['value']); $('.pic').on('click',function() { var picBase64 = Echo.getPic(); $('.pic').attr('src',picBase64); }) $('.code').on('blur',function() { var code = $('.code').val(); if(code) { var result = Echo.checkCode({code:code}); if(JSON.parse(result)['code'] == 0) { $('span').html("验证码匹配成功"); } else { $('span').html("验证码匹配失败"); } } }) }) </script> </html>
本例子，我是实现了一个小功能就是验证码的校验
