这阵子由于任务要求，使用了spring boot 搭建restful api服务，前端用了tb的antd pro 框架
记录一下其中的几个容易忘的知识点，想到了就记下来 随时补充，主要是为了以后自己随时翻阅的。各位看官看着不痛快就忍忍撒。
关于后端
1、maven 项目中的pom.xml，如果下载的时候不痛快
可以在里面加入阿里的仓库
<repositories> <repository> <id>spring-releases</id> <url>https://repo.spring.io/libs-release</url> </repository> <repository> <id>alimaven</id> <name>aliyun maven</name> <url>http://maven.aliyun.com/nexus/content/groups/public/</url> </repository> </repositories>
2、数据库连接
pom.xml中加入依赖，一是写系统路径，而是mvn安装，下面是第一种
<dependency>
<groupId>com.oracle</groupId>
<artifactId>ojdbc6</artifactId>
<version>11.2.0.1</version>
<scope>system</scope>
<systemPath>${basedir}/lib/ojdbc6.jar</systemPath>
</dependency>application.properties中
spring.datasource.driver-class-name=oracle.jdbc.OracleDriver //驱动名spring.datasource.url=jdbc:oracle:thin:@'//ip/数据库名' //格式spring.datasource.username=用户名 spring.datasource.password=密码 spring.jpa.database-platform=org.hibernate.dialect.Oracle10gDialect//语言 11g可用这个spring.jpa.show-sql=truespring.jpa.hibernate.ddl-auto=update//是否自动更新spring.jpa.hibernate.naming.strategy=org.hibernate.cfg.DefaultNamingStrategy//默认命名策略spring.jmx.enabled=false //禁止jmx
3、打包
<packaging>war</packaging>.... .... <build> <plugins> <plugin> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-maven-plugin</artifactId> </plugin> </plugins> </build>
intellij idea 中的方法 在右侧边栏tab
打开maven projects
lifecycle - 双击package
在target文件夹中即可找到打包生成的war文件
4、先设计表再生成实体
也可以反过来，都可以的
先表后实体，则利用了Intellij idea 中的persistence这个功能，一般在左侧边栏就有这个tab
5、常用的实体注解表示
@Id
@Column(name = "USERID", nullable = false, precision = 0) @GeneratedValue(strategy = GenerationType.SEQUENCE, generator = "userinfseq") @SequenceGenerator(name = "userinfseq", sequenceName = "SEQ_USERINFID",allocationSize = 1) @Basic
@Column(name = "USERNAME", nullable = true, length = 20) @ManyToOne(optional = true, fetch=FetchType.LAZY) @JoinColumn(name="ELEMENTS_BELONG_UNIT_ID", nullable = false) @OneToMany(mappedBy = "sUnitClassEntity",fetch=FetchType.LAZY,cascade = {CascadeType.PERSIST}) @JsonBackReference //*****json very important 序列化忽略
@JsonManagedReference //****反序列化不忽略 一般和@JsonBackReference配对使用
@JsonIgnore //****均忽略6、api中常用注解
@CrossOrigin@RestController@RequestMapping("/api/download")@RequestBody FileParams fileParams@Autowired@Transactional附上一个根据文件名下载的api 配合前端iframe 可实现无刷新下载
@RequestMapping(method = RequestMethod.GET) public ResponseEntity<byte[]> download( @RequestParam(value="filename",required = true,defaultValue="") String filename
) throws IOException {
File file = new File(this.getClass().getResource("/").getPath()+"data/"+filename); byte[] body = null;
InputStream is = new FileInputStream(file);
body = new byte[is.available()];
is.read(body);
HttpHeaders headers = new HttpHeaders(); int statusCode = HttpStatus.SC_OK;
headers.add("Content-Disposition", "attchement;filename=" + file.getName()); return ResponseEntity.ok().headers(headers).body(body);
}7、关于jpa数据操作
每个controller里都有这段
private JpaScoreRepository jpaScoreRepository; @Autowired
public ReportDownLoadApiController(JpaScoreRepository jpaScoreRepository){ this.jpaScoreRepository = jpaScoreRepository;
}jpa的基本增删改可上官网阅读，来个函数感受下。
public interface JpaProjectAccordingRepository extends JpaRepository<ProjectscoreRefEntity,Integer> { Page<ProjectscoreRefEntity> findPProjectscoreRefEntitiesByProjectscoreRefNameContaining(String projectname, Pageable pageable);
}判断是否存在 新加的
boolean existsByProjectname(String projectname);
自定义原生sql使用方法
@Modifying @Query(value = "delete from B_PROJECTINF where PROJECTID=?1", nativeQuery = true) void deleteProjectinfEntityById( int id);
配合EntityManager可以解决一切你要的
先定一个接口，里面返回的类型都可以自定义，但不用生成到表里，常规的类就可以，有时候需要你加上初始化函数,Page这里我是自定义的 copy jpa
public class Page<T> { private int current; private int pageSize; private Long total; private List<T> results; public void setPageSize(int pageSize) { this.pageSize = pageSize;
} public int getPageSize() { return pageSize;
} public void setCurrent(int current) { this.current = current;
} public int getCurrent() { return current;
} public List<T> getResults() { return results;
} public void setResults(List<T> results) { this.results = results;
} public long getTotal() { return total;
} public void setTotal(long total) { this.total = total;
}
}public interface SunitClass { void saveSunitClass(SUnitClassEntity sUnitClassEntity); Page<ProjectScore> findProjectScoreBy(String projectname, int userid, int pass, int pagesize, int currentpage); Page<ProjectScoreSort> findProjectScoreSortBy(int pagesize, int currentpage); Page<ProjectScore> findMyProjectScoreBy(String projectname, int userid, int pass,int pagesize, int currentpage); List<ReportData> findProjectScoreByProjectname(String projectname);
}实现它，注意这个命名 必须是对应repository后面加Impl 自定义的话需要相关设置
public class JpaScoreRepositoryImpl implements SunitClass { @PersistenceContext
private EntityManager em; @Override
public void saveSunitClass(SUnitClassEntity sUnitClassEntity) {
SUnitClassEntity sUnitClassEntity1 = new SUnitClassEntity();
sUnitClassEntity1.setUnitName(sUnitClassEntity.getUnitName());
sUnitClassEntity1.setUnitScore(sUnitClassEntity.getUnitScore());
sUnitClassEntity1.setUnitBelongProId(sUnitClassEntity.getUnitBelongProId());
sUnitClassEntity1.setUnitNote(sUnitClassEntity.getUnitNote());
sUnitClassEntity1.setUnitWeights(sUnitClassEntity.getUnitWeights());
sUnitClassEntity1.setUnitPerson(sUnitClassEntity.getUnitPerson());
sUnitClassEntity1.setUnitOk(sUnitClassEntity.getUnitOk());
em.persist(sUnitClassEntity1); for(SElementsUnitEntity seu:sUnitClassEntity.getsElementsUnitEntitySets()){
SElementsUnitEntity sElementsUnitEntity = new SElementsUnitEntity(seu.getElementsName(),seu.getElementsScore(),sUnitClassEntity1);
em.persist(sElementsUnitEntity); for(SSubelementsElementsEntity ssub:seu.getsSubelementsElementsEntities()){
SSubelementsElementsEntity sSubelementsElementsEntity = new SSubelementsElementsEntity(ssub.getSubelementsName(),ssub.getSubelementsScore(),sElementsUnitEntity);
sElementsUnitEntity.getsSubelementsElementsEntities().add(sSubelementsElementsEntity);
}
sUnitClassEntity1.getsElementsUnitEntitySets().add(sElementsUnitEntity);
}
}
..........Repository头部加入SunitClass，ok，可以使用了
public interface JpaScoreRepository extends JpaRepository<SUnitClassEntity,Integer>,SunitClass { boolean existsByunitBelongProIdAndUnitName(int unitBelongProId,String UnitName ); boolean existsByUnitBelongProIdAndUnitPerson(int unitBelongProId, int UnitPerson); void deleteByUnitBelongProIdAndUnitPerson(int unitBelongProId, int UnitPerson); List<SUnitClassEntity> findAllByunitBelongProIdAndUnitPerson(int unitBelongProId, int UnitPerson); List<SUnitClassEntity> findAllByunitBelongProId(int unitBelongProId);
}Spring boot 是自动调用jackson进行序列号化的，了解了上面几个知识点，稍加研究即可生产一套完整的restful api
关于前端
antd不得不说封装的控件很漂亮。
1、登录它的官网，照着下载个demo即可使用
2、以用户信息为例基本流程
首先进行common 文件夹下的menu route 配置 路由及菜单(自动注册了model)
然后models文件夹下创建路由菜单所关联的model
import { queryUser, removeUser, addUser } from '../services/api';//不用太困惑 这里就说antd中dva封装的方法 你可以用自己的reduxexport default { namespace: 'userinf', state: { data: { list: [], pagination: {},
},
}, effects: { //异步调用 所有的均通过这调用
*fetch({ payload }, { call, put }) { const response = yield call(queryUser, payload); //异步以同步的方式执行，reponse返回了才会进行下一步
yield put({ //调用更新state
type: 'save', payload: response,
});
},
*add({ payload, callback }, { call, put }) { const response = yield call(addUser, payload); yield put({ type: 'save', payload: response,
}); if (callback) callback(); //如果有回调 则进行回调
},
*remove({ payload, callback }, { call, put }) { const response = yield call(removeUser, payload); yield put({ type: 'save', payload: response,
}); if (callback) callback();
},
},
作者：Wantobetter
链接：https://www.jianshu.com/p/9620db9d6b65
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