commit bin-2-dic service:

bin-to-dec/.gitignore

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+HELP.md
+/target/
+!.mvn/wrapper/maven-wrapper.jar
+
+### STS ###
+.apt_generated
+.classpath
+.factorypath
+.project
+.settings
+.springBeans
+.sts4-cache
+
+### IntelliJ IDEA ###
+.idea
+*.iws
+*.iml
+*.ipr
+
+### NetBeans ###
+/nbproject/private/
+/nbbuild/
+/dist/
+/nbdist/
+/.nb-gradle/
+/build/
+
+### VS Code ###
+.vscode/

bin-to-dec/pom.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<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/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+    <parent>
+        <groupId>org.springframework.boot</groupId>
+        <artifactId>spring-boot-starter-parent</artifactId>
+        <version>2.1.4.RELEASE</version>
+        <relativePath/> <!-- lookup parent from repository -->
+    </parent>
+    <groupId>com.sortinn</groupId>
+    <artifactId>bin-to-dec</artifactId>
+    <version>0.0.1-SNAPSHOT</version>
+    <name>bin-to-dec</name>
+    <description>Demo project for Spring Boot</description>
+
+    <properties>
+        <java.version>1.8</java.version>
+    </properties>
+
+    <dependencies>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-thymeleaf</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-web</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-webflux</artifactId>
+        </dependency>
+
+        <dependency>
+            <groupId>org.projectlombok</groupId>
+            <artifactId>lombok</artifactId>
+            <optional>true</optional>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-test</artifactId>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>io.projectreactor</groupId>
+            <artifactId>reactor-test</artifactId>
+            <scope>test</scope>
+        </dependency>
+
+        <dependency>
+            <groupId>com.google.guava</groupId>
+            <artifactId>guava</artifactId>
+            <version>27.0.1-jre</version>
+        </dependency>
+    </dependencies>
+
+    <build>
+        <plugins>
+            <plugin>
+                <groupId>org.springframework.boot</groupId>
+                <artifactId>spring-boot-maven-plugin</artifactId>
+            </plugin>
+        </plugins>
+    </build>
+
+</project>

bin-to-dec/src/main/java/com/sortinn/bintodec/BinToDecApplication.java

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+package com.sortinn.bintodec;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+
+@SpringBootApplication
+public class BinToDecApplication {
+
+    public static void main(String[] args) {
+        SpringApplication.run(BinToDecApplication.class, args);
+    }
+
+}

bin-to-dec/src/main/java/com/sortinn/bintodec/controller/BinToDecController.java

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+package com.sortinn.bintodec.controller;
+
+import com.sortinn.bintodec.service.BinToDecService;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.stereotype.Controller;
+import org.springframework.web.bind.annotation.PathVariable;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.servlet.ModelAndView;
+
+import javax.annotation.Resource;
+
+/**
+ * @author tian.gao
+ * @create 2019.04.22 11:47 PM
+ **/
+@Slf4j
+@Controller
+@RequestMapping("/cal")
+public class BinToDecController {
+
+    @Resource
+    private BinToDecService binToDecService;
+
+    @PostMapping("/b2d/{binary}")
+    public ModelAndView b2d(@PathVariable("binary") String binary) {
+        Integer res = binToDecService.binToDecConvert(binary);
+        ModelAndView modelAndView = new ModelAndView("home-list");
+        modelAndView.addObject("res", res);
+        return modelAndView;
+    }
+}

bin-to-dec/src/main/java/com/sortinn/bintodec/service/BinToDecService.java

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+package com.sortinn.bintodec.service;
+
+import lombok.extern.slf4j.Slf4j;
+import org.apache.logging.log4j.util.Strings;
+import org.springframework.stereotype.Service;
+
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+
+/**
+ * @author tian.gao
+ * @create 2019.04.22 11:47 PM
+ **/
+@Slf4j
+@Service
+public class BinToDecService {
+
+    private static final int MAX_LENGTH = 8;
+
+    public Integer binToDecConvert(String binary) {
+        if (Strings.isEmpty(binary)) {
+            log.error("binary empty");
+            return null;
+        }
+        if (binary.length() > MAX_LENGTH) {
+            log.error("more than max length");
+            return null;
+        }
+
+        String regex = "^[01]+$";
+        Pattern pattern = Pattern.compile(regex);
+        Matcher matcher = pattern.matcher(binary);
+        Double res = 0.0;
+
+        if (matcher.find()) {
+            String[] binaryArr = binary.split("");
+            int length = binaryArr.length;
+            for (int i = 0; i < length; i++) {
+                res += Integer.parseInt(binaryArr[i]) * Math.pow(2, length - 1 - i);
+            }
+        } else {
+            log.error("input is not binary number");
+            return null;
+        }
+        return res.intValue();
+
+    }
+
+    public static void main(String[] args) {
+        System.out.println(new BinToDecService().binToDecConvert("11111110"));
+    }
+}

bin-to-dec/src/main/resources/application.properties

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+

bin-to-dec/src/main/resources/templates/home-list.html

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+<!doctype html>
+<html lang="en" xmlns:th="http://www.thymeleaf.org">
+<head>
+    <!-- Required meta tags -->
+    <meta charset="utf-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
+
+    <!-- Bootstrap CSS -->
+    <link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/css/bootstrap.min.css"
+          integrity="sha384-ggOyR0iXCbMQv3Xipma34MD+dH/1fQ784/j6cY/iJTQUOhcWr7x9JvoRxT2MZw1T" crossorigin="anonymous">
+    <title>Home</title>
+</head>
+<ul class="nav nav-tabs">
+    <li class="nav-item">
+        <a class="nav-link active" href="/user/list">主页</a>
+    </li>
+    <li class="nav-item">
+        <a class="nav-link" href="/user/addNewUser">新增</a>
+    </li>
+</ul>
+<div class="jumbotron">
+    <h1>十进制计算器</h1>
+    <p>可二进制转换转换为十进制</p>
+</div>
+<body>
+<!--最外层容器-->
+<div id="wrap" class="container">
+    <!--页面头部-->
+    <header>
+
+    </header>
+    <!-- 页面主体部分-->
+    <div id="main_content" th:include="::main_content">
+        <div th:fragment="main_content">
+            <table class="table">
+                <thead class="table-dark">
+                <tr>
+                    <th scope="col">用户id</th>
+                    <th>用户名</th>
+                    <th>性别</th>
+                    <th>年龄</th>
+                    <th>备注</th>
+                    <th>是否可用</th>
+                    <th>操作</th>
+                </tr>
+                </thead>
+                <tbody>
+
+                <tr th:each="userInfo:${content}">
+                    <td th:text="${userInfo.getUserId()}"></td>
+                    <td th:text="${userInfo.getUserName()}"></td>
+                    <td th:text="${userInfo.getGender()}"></td>
+                    <td th:text="${userInfo.getAge()}"></td>
+                    <td th:text="${userInfo.getComment()}"></td>
+                    <td th:text="${userInfo.isAvailable()}"></td>
+                    <td>
+                        <a th:href="@{'/user/update/'+${userInfo.getId()}}">编辑</a>
+                        <a th:href="@{'/user/delete/'+${userInfo.getId()}}" onclick="alert('确定要删除用户吗？')">删除</a>
+                    </td>
+                </tr>
+                </tbody>
+            </table>
+            <div style="position:absolute;left:50%;margin-left:-100px;">
+                <ul class="pagination">
+                    <!-- 上一页 -->
+                    <li class="page-item" data-th-classappend="*{firstPage} ? 'disabled' : ''">
+                        <a th:href="@{'/user/list?pageNum=' + ${currentNumber - 1}}" class="page-link"
+                           data-th-attr="pageIndex=${currentNumber} - 1"
+                           aria-label="Previous">
+                            <span aria-hidden="true">«</span>
+                        </a>
+                    </li>
+
+                    <!-- 迭代生成页码 -->
+                    <li class="page-item" data-th-each="i : ${#numbers.sequence(1, totalPages)}"
+                        data-th-classappend="${(currentNumber + 1) eq i} ? 'active' : ''">
+                        <a class="page-link" data-th-attr="pageIndex=${i} - 1"
+                           th:href="@{'/user/list?pageNum=' + ${i - 1}}">
+                            <span data-th-text="${i}"></span>
+                        </a>
+                    </li>
+
+                    <!-- 下一页 -->
+                    <li class="page-item" data-th-classappend="*{lastPage} ? 'disabled' : ''">
+                        <a th:href="@{'/user/list?pageNum=' + ${currentNumber + 1}}" class="page-link"
+                           data-th-attr="pageIndex=${currentNumber} + 1"
+                           aria-label="Next">
+                            <span aria-hidden="true">»</span>
+                        </a>
+                    </li>
+                </ul>
+            </div>
+        </div>
+    </div>
+
+</div>
+
+
+<!-- 最新版本的 Bootstrap 核心 CSS 文件 -->
+<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/bootstrap@3.3.7/dist/css/bootstrap.min.css"
+      integrity="sha384-BVYiiSIFeK1dGmJRAkycuHAHRg32OmUcww7on3RYdg4Va+PmSTsz/K68vbdEjh4u" crossorigin="anonymous">
+
+<!-- 可选的 Bootstrap 主题文件（一般不用引入） -->
+<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/bootstrap@3.3.7/dist/css/bootstrap-theme.min.css"
+      integrity="sha384-rHyoN1iRsVXV4nD0JutlnGaslCJuC7uwjduW9SVrLvRYooPp2bWYgmgJQIXwl/Sp" crossorigin="anonymous">
+
+<!-- 最新的 Bootstrap 核心 JavaScript 文件 -->
+<script src="https://cdn.jsdelivr.net/npm/bootstrap@3.3.7/dist/js/bootstrap.min.js"
+        integrity="sha384-Tc5IQib027qvyjSMfHjOMaLkfuWVxZxUPnCJA7l2mCWNIpG9mGCD8wGNIcPD7Txa"
+        crossorigin="anonymous"></script>
+<script src="/jquery.min.js"></script>
+<script src="/jquery.page.js"></script>
+</body>
+</html>

bin-to-dec/src/test/java/com/sortinn/bintodec/BinToDecApplicationTests.java

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+package com.sortinn.bintodec;
+
+import com.sortinn.bintodec.service.BinToDecService;
+import org.junit.Assert;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.test.context.junit4.SpringRunner;
+
+import javax.annotation.Resource;
+
+@RunWith(SpringRunner.class)
+@SpringBootTest
+public class BinToDecApplicationTests {
+
+    @Resource
+    private BinToDecService binToDecService;
+
+    @Test
+    public void contextLoads() {
+    }
+
+    @Test
+    public void b2d_test() {
+        Integer res = binToDecService.binToDecConvert("11111111");
+        System.out.println(res);
+    }
+
+}