pom.xml Add canal.client dependency
(1.1.5 has changed a lot, the client here uses 1.1.4)
<?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>2.2.2.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>top.yueshushu</groupId>
<artifactId>learn</artifactId>
<version>1.0-SNAPSHOT</version>
<name>Canal</name>
<description>学习 Canal</description>
<properties>
<java.version>1.8</java.version>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
</dependency>
<!-- 导入配置文件处理器，配置文件进行绑定就会有提示，需要重启 -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-configuration-processor</artifactId>
<optional>true</optional>
</dependency>
<!--导入自动热步署的依赖-->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-devtools</artifactId>
<optional>true</optional>
</dependency>
<!--引入MySql的驱动-->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
</dependency>
<!--引入springboot与mybatis整合的依赖-->
<dependency>
<groupId>org.mybatis.spring.boot</groupId>
<artifactId>mybatis-spring-boot-starter</artifactId>
<version>2.1.4</version>
</dependency>
<!-- 引入pagehelper分页插件 -->
<dependency>
<groupId>com.github.pagehelper</groupId>
<artifactId>pagehelper-spring-boot-starter</artifactId>
<version>1.2.5</version>
</dependency>
<!--添加 druid-spring-boot-starter的依赖的依赖-->
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>druid-spring-boot-starter</artifactId>
<version>1.1.14</version>
</dependency>
<!--SpringBoot 的aop 模块-->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-aop</artifactId>
</dependency>
<!--添加canal的依赖. 重要. 使用 1.1.4-->
<dependency>
<groupId>com.alibaba.otter</groupId>
<artifactId>canal.client</artifactId>
<version>1.1.4</version>
</dependency>
<dependency>
<groupId>joda-time</groupId>
<artifactId>joda-time</artifactId>
<version>2.9.4</version>
</dependency>
</dependencies>
<build>
<!--将该目录下的文件全部打包成类的路径-->
<resources>
<resource>
<directory>src/main/resources</directory>
</resource>
</resources>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>Business function processing
Simple Connection program
/**
* 一个简单的canal 的连接测试程序
*/
@Test
public void connectionTest() {
//1. 创建连接 填充对应的地址信息 ,要监控的实例和相应的用户名和密码
CanalConnector canalConnector = CanalConnectors.newSingleConnector(
new InetSocketAddress(
"127.0.0.1", 11111
),
"example",
"canal",
"canal"
);
//2. 进行连接
canalConnector.connect();
log.info(">>>连接成功:{}", canalConnector);
}17:26:32.179 [main] INFO top.yueshushu.learn.CanalDemoTest - >>>Connection successful: com.alibaba.otter.canal.client.impl. SimpleCanalConnector@31ef45e3
Single acquisition of data
/**
* 获取数据信息. 可以发现,未获取到数据 . 这个应该是实时的.
*/
@Test
public void getDataTest() {
//1. 创建连接
CanalConnector canalConnector = CanalConnectors.newSingleConnector(
new InetSocketAddress("127.0.0.1", 11111),
"example",
"canal",
"canal"
);
// 进行连接
canalConnector.connect();
//3. 注册,看使用哪个数据库表
canalConnector.subscribe("springboot.user");
//4. 获取 1条数据
Message message = canalConnector.get(1);
log.info("获取的数据:id:{},数据:{}", message.getId(), message);
if (message.getId() == -1) {
log.info(">>>未获取到数据");
return;
}
//5. 获取相应的数据集合
List<CanalEntry.Entry> entries = message.getEntries();
for (CanalEntry.Entry entry : entries) {
log.info(">>>获取数据 {}", entry);
//获取表名
CanalEntry.Header header = entry.getHeader();
log.info(">>>获取表名:{}", header.getTableName());
CanalEntry.EntryType entryType = entry.getEntryType();
log.info(">>获取类型 {}:,对应的信息:{}", entryType.getNumber(), entryType.name());
//获取数据
ByteString storeValue = entry.getStoreValue();
log.info(">>>输出存储的值:{}", storeValue);
}
}
Insert a piece of data into the main library
insert into springboot.user(id,name,age,sex,description) values(1,'canal添加用户',24,'男','学习canal');
Execute again:
Loop to obtain data
/**
* 获取数据信息. 获取现在的数据. 再次执行时,就没有这个数据了.
*/
@Test
public void getNowDataTest() {
//1. 创建连接
CanalConnector canalConnector = CanalConnectors.newSingleConnector(
new InetSocketAddress("127.0.0.1", 11111),
"example",
"canal",
"canal"
);
// 进行连接
canalConnector.connect();
//3. 注册,看使用哪个数据库表
canalConnector.subscribe("springboot.user");
for (;;) {
//4. 获取 1条数据
Message message = canalConnector.get(1);
log.info("获取的数据:id:{},数据:{}", message.getId(), message);
if (message.getId() == -1) {
log.info(">>>未获取到数据");
try {
TimeUnit.MILLISECONDS.sleep(1000);
} catch (InterruptedException e) {
e.printStackTrace();
}
continue;
}
//5. 获取相应的数据集合
List<CanalEntry.Entry> entries = message.getEntries();
for (CanalEntry.Entry entry : entries) {
log.info(">>>获取数据 {}", entry);
//获取表名
CanalEntry.Header header = entry.getHeader();
log.info(">>>获取表名:{}", header.getTableName());
CanalEntry.EntryType entryType = entry.getEntryType();
log.info(">>获取类型 {}:,对应的信息:{}", entryType.getNumber(), entryType.name());
//获取数据
ByteString storeValue = entry.getStoreValue();
log.info(">>>输出存储的值:{}", storeValue);
}
}
}You can obtain the corresponding data change information at any time.
You will find that the value of storeValue is difficult to interpret. This data needs to be parsed.
Parse the storeValue value
/**
* 将 storeValue 进行解析,解析成我们能看懂的语句.
* 对数据库 cud 进行处理操作观看一下.
* 发现,点是不好的,也有多余的记录信息.
*
* @throws Exception 异常
*/
@Test
public void convertDataTest() throws Exception {
//1. 创建连接
CanalConnector canalConnector = CanalConnectors.newSingleConnector(
new InetSocketAddress("127.0.0.1", 11111),
"example",
"canal", "canal"
);
//2. 进行连接
canalConnector.connect();
canalConnector.subscribe("springboot.user");
for (;;) {
//获取信息
Message message = canalConnector.get(1);
if (message.getId() == -1L) {
// log.info("未获取到数据");
try {
TimeUnit.MILLISECONDS.sleep(100);
} catch (InterruptedException e) {
e.printStackTrace();
}
continue;
}
List<CanalEntry.Entry> entryList = message.getEntries();
//对获取到的数据进行处理
log.info(">>获取到{}条数据", entryList.size());
for (CanalEntry.Entry entry : entryList) {
CanalEntry.Header header = entry.getHeader();
log.info(">>>获取表名:{}", header.getTableName());
//获取类型.
CanalEntry.EntryType entryType = entry.getEntryType();
log.info(">>类型编号 {},类型名称:{}", entryType.getNumber(), entryType.name());
//获取存入日志的值
ByteString storeValue = entry.getStoreValue();
//将这个值进行解析
CanalEntry.RowChange rowChange = RowChange.parseFrom(storeValue);
String sql = rowChange.getSql();
log.info(">>>获取对应的sql:{}", sql);
// 这个sql 可能是 批量的sql语句
List<CanalEntry.RowData> rowDatasList = rowChange.getRowDatasList();
for (CanalEntry.RowData rowData : rowDatasList) {
log.info(">>>获取信息:{}", rowData);
//对数据进行处理
List<CanalEntry.Column> beforeColumnsList = rowData.getBeforeColumnsList();
List<CanalEntry.Column> afterColumnsList = rowData.getAfterColumnsList();
beforeColumnsList.forEach(
n -> log.info("哪个列{},原先是{},是否被更新{}", n.getName(),
n.getValue(), n.getUpdated())
);
afterColumnsList.forEach(
n -> log.info("哪个列{},后来是{},是否被更新{}", n.getName(), n.getValue(), n.getUpdated())
);
}
}
}
}Execute sql again
insert into springboot.user(id,name,age,sex,description) values(2,'canal添加用户2',25,'男','学习canal2');
Different types are processed differently
Discover other Types such as: TRANSACTIONBEGIN are also processed
/**
* 类型转换数据
*
* @throws Exception 异常
*/
@Test
public void dataTypeTest() throws Exception {
CanalConnector canalConnector = CanalConnectors.newSingleConnector(
new InetSocketAddress(
"127.0.0.1", 11111
),
"example",
"canal", "canal"
);
canalConnector.connect();
canalConnector.subscribe("springboot.user");
for(;;){
Message message = canalConnector.get(1);
if (message.getId() == -1) {
TimeUnit.SECONDS.sleep(1);
continue;
}
List<CanalEntry.Entry> entries = message.getEntries();
for (CanalEntry.Entry entry : entries) {
CanalEntry.EntryType entryType = entry.getEntryType();
//只要 RowData 数据类型的
if (!CanalEntry.EntryType.ROWDATA.equals(entryType)) {
continue;
}
String tableName = entry.getHeader().getTableName();
log.info(">>>对表 {} 进行操作", tableName);
ByteString storeValue = entry.getStoreValue();
RowChange rowChange = RowChange.parseFrom(storeValue);
//行改变
CanalEntry.EventType eventType = rowChange.getEventType();
switch (eventType) {
case INSERT: {
insertHandler(rowChange);
break;
}
case UPDATE: {
updateHandler(rowChange);
break;
}
case DELETE: {
deleteHandler(rowChange);
break;
}
default: {
break;
}
}
}
}
}
private void deleteHandler(RowChange rowChange) {
log.info(">>>>执行删除的方法");
List<CanalEntry.RowData> rowDatasList = rowChange.getRowDatasList();
for (CanalEntry.RowData rowData : rowDatasList) {
List<CanalEntry.Column> beforeColumnsList = rowData.getBeforeColumnsList();
for (CanalEntry.Column column : beforeColumnsList) {
log.info(">>>>>字段 {} 删除数据 {}", column.getName(), column.getValue());
}
}
}
private void updateHandler(RowChange rowChange) {
log.info(">>>执行更新的方法");
List<CanalEntry.RowData> rowDatasList = rowChange.getRowDatasList();
for (CanalEntry.RowData rowData : rowDatasList) {
List<CanalEntry.Column> beforeColumnsList = rowData.getBeforeColumnsList();
List<CanalEntry.Column> afterColumnsList = rowData.getAfterColumnsList();
Map<String, String> beforeValueMap = beforeColumnsList.stream().collect(
Collectors.toMap(
CanalEntry.Column::getName,
CanalEntry.Column::getValue
)
);
Map<String, String> afterValueMap = afterColumnsList.stream().collect(
Collectors.toMap(
CanalEntry.Column::getName,
CanalEntry.Column::getValue
)
);
beforeValueMap.forEach((column, beforeValue) -> {
String afterValue = afterValueMap.get(column);
Boolean update = beforeValue.equals(afterValue);
log.info("修改列:{},修改前的值:{},修改后的值:{},是否更新:{}", column, beforeValue, afterValue,
update);
});
}
}
/**
* 插入数据. 只有后的数据.
*
* @param rowChange 行改变
*/
private void insertHandler(RowChange rowChange) {
log.info(">>>执行添加 的方法");
List<CanalEntry.RowData> rowDatasList = rowChange.getRowDatasList();
for (CanalEntry.RowData rowData : rowDatasList) {
List<CanalEntry.Column> afterColumnsList = rowData.getAfterColumnsList();
for (CanalEntry.Column column : afterColumnsList) {
if (!StringUtils.hasText(column.getValue())) {
continue;
}
log.info("字段 {} 插入了数据 {}", column.getName(), column.getValue());
}
}
}Insertion, update, and deletion are processed respectively.
Start the test program first:
Do not print any information.
The main table executes the add statement:
insert into springboot.user(id,name,age,sex,description) values(4,'canal添加用户4',25,'男','学习canal4');
The information will be printed:
The main table performs modification operations.
update springboot.user set name='开开心心',age=26,description='岳泽霖' where id =4;When updating, if each field is the same as the original, no log consumption will occur.
delete from springboot.user where id =4;
/**
* 一次性获取多条数据。
* sql 执行多条。
*/
@Test
public void dataMoreTest() throws Exception {
//1. 创建 canal连接对象
CanalConnector canalConnector = CanalConnectors.newSingleConnector(
new InetSocketAddress(
"127.0.0.1", 11111
),
"example",
"canal",
"canal"
);
canalConnector.connect();
// 订阅哪个对象
canalConnector.subscribe("springboot.user");
for (; ; ) {
// Message message = canalConnector.get(3, 5L, TimeUnit.SECONDS);
Message message = canalConnector.get(3);
if (message.getId() == -1) {
// 未获取到数据
continue;
}
List<CanalEntry.Entry> entries = message.getEntries();
for (CanalEntry.Entry entry : entries) {
CanalEntry.EntryType entryType = entry.getEntryType();
if (!CanalEntry.EntryType.ROWDATA.equals(entryType)) {
continue;
}
String tableName = entry.getHeader().getTableName();
log.info(">>>>对表{} 执行操作", tableName);
CanalEntry.RowChange rowChange = CanalEntry.RowChange.parseFrom(entry.getStoreValue());
//对类型进行处理
CanalEntry.EventType eventType = rowChange.getEventType();
switch (eventType) {
case INSERT: {
insertHandler(rowChange);
break;
}
case UPDATE: {
updateHandler(rowChange);
break;
}
case DELETE: {
deleteHandler(rowChange);
break;
}
default: {
break;
}
}
}
}
}
private void deleteHandler(CanalEntry.RowChange rowChange) {
log.info(">>>>执行删除的方法");
List<CanalEntry.RowData> rowDatasList = rowChange.getRowDatasList();
for (CanalEntry.RowData rowData : rowDatasList) {
List<CanalEntry.Column> beforeColumnsList = rowData.getBeforeColumnsList();
for (CanalEntry.Column column : beforeColumnsList) {
log.info(">>>>>字段 {} 删除数据 {}", column.getName(), column.getValue());
}
}
}
private void updateHandler(CanalEntry.RowChange rowChange) {
log.info(">>>执行更新的方法");
List<CanalEntry.RowData> rowDatasList = rowChange.getRowDatasList();
for (CanalEntry.RowData rowData : rowDatasList) {
List<CanalEntry.Column> beforeColumnsList = rowData.getBeforeColumnsList();
List<CanalEntry.Column> afterColumnsList = rowData.getAfterColumnsList();
Map<String, String> beforeValueMap = beforeColumnsList.stream().collect(
Collectors.toMap(
CanalEntry.Column::getName,
CanalEntry.Column::getValue
)
);
Map<String, String> afterValueMap = afterColumnsList.stream().collect(
Collectors.toMap(
CanalEntry.Column::getName,
CanalEntry.Column::getValue
)
);
beforeValueMap.forEach((column, beforeValue) -> {
String afterValue = afterValueMap.get(column);
Boolean update = beforeValue.equals(afterValue);
log.info("修改列:{},修改前的值:{},修改后的值:{},是否更新:{}", column, beforeValue, afterValue,
update);
});
}
}
/**
* 插入数据. 只有后的数据.
*
* @param rowChange 行改变
*/
private void insertHandler(CanalEntry.RowChange rowChange) {
log.info(">>>执行添加 的方法");
List<CanalEntry.RowData> rowDatasList = rowChange.getRowDatasList();
for (CanalEntry.RowData rowData : rowDatasList) {
List<CanalEntry.Column> afterColumnsList = rowData.getAfterColumnsList();
for (CanalEntry.Column column : afterColumnsList) {
if (!StringUtils.hasText(column.getValue())) {
continue;
}
log.info("字段 {} 插入了数据 {}", column.getName(), column.getValue());
}
}
}
Modification points:// Message message = canalConnector.get(3, 5L, TimeUnit.SECONDS);
Message message = canalConnector.get(3);.get(3) means getting 3 records at one time.canalConnector.get(3, 5L, TimeUnit.SECONDS); means to obtain 3 records within 5 seconds. There are two trigger conditions, one is to obtain 3 records, and the other is to reach 5 seconds. The effect display information is the same as before, so it will not be demonstrated again. ack Configuration information/**
* 一次性获取多条数据。
* sql 执行多条。
*/
@Test
public void dataMoreTest() throws Exception {
//1. 创建 canal连接对象
CanalConnector canalConnector = CanalConnectors.newSingleConnector(
new InetSocketAddress(
"127.0.0.1", 11111
),
"example",
"canal",
"canal"
);
canalConnector.connect();
// 订阅哪个对象
canalConnector.subscribe("springboot.user");
for (; ; ) {
Message message = canalConnector.getWithoutAck(3, 2L, TimeUnit.SECONDS);
if (message.getId() == -1) {
// 未获取到数据
TimeUnit.MILLISECONDS.sleep(500);
continue;
}
log.info(">>>>获取对应的 id: {}",message.getId());
List<CanalEntry.Entry> entries = message.getEntries();
for (CanalEntry.Entry entry : entries) {
CanalEntry.EntryType entryType = entry.getEntryType();
if (!CanalEntry.EntryType.ROWDATA.equals(entryType)) {
continue;
}
String tableName = entry.getHeader().getTableName();
log.info(">>>>对表{} 执行操作", tableName);
CanalEntry.RowChange rowChange = CanalEntry.RowChange.parseFrom(entry.getStoreValue());
//对类型进行处理
CanalEntry.EventType eventType = rowChange.getEventType();
switch (eventType) {
case INSERT: {
insertHandler(rowChange);
break;
}
case UPDATE: {
updateHandler(rowChange);
break;
}
case DELETE: {
deleteHandler(rowChange);
break;
}
default: {
break;
}
}
}
//进行回滚
// canalConnector.rollback();
//确认ack 配置
canalConnector.ack(message.getId());
}
}
private void deleteHandler(CanalEntry.RowChange rowChange) {
log.info(">>>>执行删除的方法");
List<CanalEntry.RowData> rowDatasList = rowChange.getRowDatasList();
for (CanalEntry.RowData rowData : rowDatasList) {
List<CanalEntry.Column> beforeColumnsList = rowData.getBeforeColumnsList();
for (CanalEntry.Column column : beforeColumnsList) {
log.info(">>>>>字段 {} 删除数据 {}", column.getName(), column.getValue());
}
}
}
private void updateHandler(CanalEntry.RowChange rowChange) {
log.info(">>>执行更新的方法");
List<CanalEntry.RowData> rowDatasList = rowChange.getRowDatasList();
for (CanalEntry.RowData rowData : rowDatasList) {
List<CanalEntry.Column> beforeColumnsList = rowData.getBeforeColumnsList();
List<CanalEntry.Column> afterColumnsList = rowData.getAfterColumnsList();
Map<String, String> beforeValueMap = beforeColumnsList.stream().collect(
Collectors.toMap(
CanalEntry.Column::getName,
CanalEntry.Column::getValue
)
);
Map<String, String> afterValueMap = afterColumnsList.stream().collect(
Collectors.toMap(
CanalEntry.Column::getName,
CanalEntry.Column::getValue
)
);
beforeValueMap.forEach((column, beforeValue) -> {
String afterValue = afterValueMap.get(column);
Boolean update = beforeValue.equals(afterValue);
log.info("修改列:{},修改前的值:{},修改后的值:{},是否更新:{}", column, beforeValue, afterValue,
update);
});
}
}
/**
* 插入数据. 只有后的数据.
*
* @param rowChange 行改变
*/
private void insertHandler(CanalEntry.RowChange rowChange) {
log.info(">>>执行添加 的方法");
List<CanalEntry.RowData> rowDatasList = rowChange.getRowDatasList();
for (CanalEntry.RowData rowData : rowDatasList) {
List<CanalEntry.Column> afterColumnsList = rowData.getAfterColumnsList();
for (CanalEntry.Column column : afterColumnsList) {
if (!StringUtils.hasText(column.getValue())) {
continue;
}
log.info("字段 {} 插入了数据 {}", column.getName(), column.getValue());
}
}
}
Main information:
Message message = canalConnector.getWithoutAck(3, 2L, TimeUnit.SECONDS); //Rollback//canalConnector.rollback();//Confirm ack configuration canalConnector.ack(message.getId());Manually confirm that the message is consumed.Execution statement:When the message rollback() is rolled back, the message will be consumed again.canalConnector.rollback();
insert into springboot.user(id,name,age,sex,description) values(5,'canal添加用户5',25,'男','学习canal5');
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SpringBoot怎么实现二维码扫码登录May 10, 2023 pm 08:25 PM一、手机扫二维码登录的原理二维码扫码登录是一种基于OAuth3.0协议的授权登录方式。在这种方式下，应用程序不需要获取用户的用户名和密码，只需要获取用户的授权即可。二维码扫码登录主要有以下几个步骤：应用程序生成一个二维码，并将该二维码展示给用户。用户使用扫码工具扫描该二维码，并在授权页面中授权。用户授权后，应用程序会获取一个授权码。应用程序使用该授权码向授权服务器请求访问令牌。授权服务器返回一个访问令牌给应用程序。应用程序使用该访问令牌访问资源服务器。通过以上步骤，二维码扫码登录可以实现用户的快
SpringBoot/Spring AOP默认动态代理方式是什么May 10, 2023 pm 03:52 PM1.springboot2.x及以上版本在SpringBoot2.xAOP中会默认使用Cglib来实现，但是Spring5中默认还是使用jdk动态代理。SpringAOP默认使用JDK动态代理，如果对象没有实现接口，则使用CGLIB代理。当然，也可以强制使用CGLIB代理。在SpringBoot中，通过AopAutoConfiguration来自动装配AOP.2.Springboot1.xSpringboot1.xAOP默认还是使用JDK动态代理的3.SpringBoot2.x为何默认使用Cgl
spring boot怎么对敏感信息进行加解密May 10, 2023 pm 02:46 PM我们使用jasypt最新版本对敏感信息进行加解密。1.在项目pom文件中加入如下依赖：com.github.ulisesbocchiojasypt-spring-boot-starter3.0.32.创建加解密公用类：packagecom.myproject.common.utils;importorg.jasypt.encryption.pbe.PooledPBEStringEncryptor;importorg.jasypt.encryption.pbe.config.SimpleStrin
使用Java SpringBoot集成POI实现Word文档导出Apr 21, 2023 pm 12:19 PM知识准备需要理解ApachePOI遵循的标准（OfficeOpenXML（OOXML）标准和微软的OLE2复合文档格式（OLE2）），这将对应着API的依赖包。什么是POIApachePOI是用Java编写的免费开源的跨平台的JavaAPI，ApachePOI提供API给Java程序对MicrosoftOffice格式档案读和写的功能。POI为“PoorObfuscationImplementation”的首字母缩写，意为“简洁版的模糊实现”。ApachePOI是创建和维护操作各种符合Offic
springboot怎么整合shiro实现多验证登录功能May 10, 2023 pm 04:19 PM1.首先新建一个shiroConfigshiro的配置类，代码如下：@ConfigurationpublicclassSpringShiroConfig{/***@paramrealms这儿使用接口集合是为了实现多验证登录时使用的*@return*/@BeanpublicSecurityManagersecurityManager(Collectionrealms){DefaultWebSecurityManagersManager=newDefaultWebSecurityManager();
SpringBoot项目打包发布到外部tomcat遇到的问题怎么解决May 10, 2023 pm 05:49 PM先说遇到问题的情景：初次尝试使用springboot框架写了个小web项目，在IntellijIDEA中能正常启动运行。使用maven运行install，生成war包，发布到本机的tomcat下，出现异常，主要的异常信息是.......LifeCycleException。经各种搜索，找到答案。springboot因为内嵌tomcat容器，所以可以通过打包为jar包的方法将项目发布，但是如何将springboot项目打包成可发布到tomcat中的war包项目呢？1.既然需要打包成war包项目，首
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