本篇解决 spring 执行sql脚本(文件)的问题。
场景描述可以不看。
场景描述:
我在运行单测的时候,也就是 spring 工程启动的时候,spring 会去执行 classpath:schema.sql(后面会解释),我想利用这一点,解决一个问题:
一次运行多个测试文件,每个文件先后独立运行,而上一个文件创建的数据,会对下一个文件运行时造成影响,所以我要在每个文件执行完成之后,重置数据库,不单单是把数据删掉,而 schema.sql 里面有 drop table 和create table。
解决方法:
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
|
//schema 处理器
@component
public class schemahandler {
private final string schema_sql = "classpath:schema.sql" ;
@autowired
private datasource datasource;
@autowired
private springcontextgetter springcontextgetter;
public void execute() throws exception {
resource resource = springcontextgetter.getapplicationcontext().getresource(schema_sql);
scriptutils.executesqlscript(datasource.getconnection(), resource);
}
}
// 获取 applicationcontext
@component
public class springcontextgetter implements applicationcontextaware {
private applicationcontext applicationcontext;
public applicationcontext getapplicationcontext() {
return applicationcontext;
}
@override
public void setapplicationcontext(applicationcontext applicationcontext) throws beansexception {
this .applicationcontext = applicationcontext;
}
}
|
备注:
关于为何 spring 会去执行 classpath:schema.sql,可以参考源码
org.springframework.boot.autoconfigure.jdbc.datasourceinitializer#runschemascripts
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
|
private void runschemascripts() {
list<resource> scripts = getscripts( "spring.datasource.schema" ,
this .properties.getschema(), "schema" );
if (!scripts.isempty()) {
string username = this .properties.getschemausername();
string password = this .properties.getschemapassword();
runscripts(scripts, username, password);
try {
this .applicationcontext
.publishevent( new datasourceinitializedevent( this .datasource));
// the listener might not be registered yet, so don't rely on it.
if (! this .initialized) {
rundatascripts();
this .initialized = true ;
}
}
catch (illegalstateexception ex) {
logger.warn( "could not send event to complete datasource initialization ("
+ ex.getmessage() + ")" );
}
}
}
/**
* 默认拿 classpath*:schema-all.sql 和 classpath*:schema.sql
*/
private list<resource> getscripts(string propertyname, list<string> resources,
string fallback) {
if (resources != null ) {
return getresources(propertyname, resources, true );
}
string platform = this .properties.getplatform();
list<string> fallbackresources = new arraylist<string>();
fallbackresources.add( "classpath*:" + fallback + "-" + platform + ".sql" );
fallbackresources.add( "classpath*:" + fallback + ".sql" );
return getresources(propertyname, fallbackresources, false );
}
|
参考:https://github.com/spring-projects/spring-boot/issues/9048
以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持服务器之家。
原文链接:https://segmentfault.com/a/1190000018344940