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
时间： 2024-10-21 04:12:25