我试图从mariaDb切换到SQLite数据库在Spring Boot 。我一直在遵循一些教程,经过一段时间后,我终于得到了它的工作,但当我运行应用程序时,我得到了以下错误:
[SQLITE_ERROR] SQL error or missing database (no such table: user)
我的application.properties
:
spring.datasource.url=jdbc:sqlite:IperfDataBase
spring.datasource.driver-class-name=org.sqlite.JDBC;
spring.jpa.database-platform=my.packages.database.SQLiteDialect
我的数据源@Bean
:
@Bean
public DataSource dataSource() {
DataSourceBuilder dataSourceBuilder = DataSourceBuilder.create();
dataSourceBuilder.driverClassName("org.sqlite.JDBC");
dataSourceBuilder.url("jdbc:sqlite:IperfDataBase");
return dataSourceBuilder.build();
}
我的SQLite方言
package my.packages.database;
import java.sql.Types;
import org.hibernate.dialect.Dialect;
import org.hibernate.dialect.function.StandardSQLFunction;
import org.hibernate.dialect.function.SQLFunctionTemplate;
import org.hibernate.dialect.function.VarArgsSQLFunction;
import org.hibernate.type.StringType;
public class SQLiteDialect extends Dialect {
public SQLiteDialect() {
registerColumnType(Types.BIT, "integer");
registerColumnType(Types.TINYINT, "tinyint");
registerColumnType(Types.SMALLINT, "smallint");
registerColumnType(Types.INTEGER, "integer");
registerColumnType(Types.BIGINT, "bigint");
registerColumnType(Types.FLOAT, "float");
registerColumnType(Types.REAL, "real");
registerColumnType(Types.DOUBLE, "double");
registerColumnType(Types.NUMERIC, "numeric");
registerColumnType(Types.DECIMAL, "decimal");
registerColumnType(Types.CHAR, "char");
registerColumnType(Types.VARCHAR, "varchar");
registerColumnType(Types.LONGVARCHAR, "longvarchar");
registerColumnType(Types.DATE, "date");
registerColumnType(Types.TIME, "time");
registerColumnType(Types.TIMESTAMP, "timestamp");
registerColumnType(Types.BINARY, "blob");
registerColumnType(Types.VARBINARY, "blob");
registerColumnType(Types.LONGVARBINARY, "blob");
// registerColumnType(Types.NULL, "null");
registerColumnType(Types.BLOB, "blob");
registerColumnType(Types.CLOB, "clob");
registerColumnType(Types.BOOLEAN, "integer");
registerFunction( "concat", new VarArgsSQLFunction(StringType.INSTANCE, "", "||", "") );
registerFunction( "mod", new SQLFunctionTemplate( StringType.INSTANCE, "?1 % ?2" ) );
registerFunction( "substr", new StandardSQLFunction("substr", StringType.INSTANCE) );
registerFunction( "substring", new StandardSQLFunction( "substr", StringType.INSTANCE) );
}
public boolean supportsIdentityColumns() {
return true;
}
public boolean hasDataTypeInIdentityColumn() {
return false;
}
public String getIdentityColumnString() {
return "integer";
}
public String getIdentitySelectString() {
return "select last_insert_rowid()";
}
public boolean supportsLimit() {
return true;
}
protected String getLimitString(String query, boolean hasOffset) {
return new StringBuffer(query.length()+20).
append(query).
append(hasOffset ? " limit ? offset ?" : " limit ?").
toString();
}
public boolean supportsTemporaryTables() {
return true;
}
public String getCreateTemporaryTableString() {
return "create temporary table if not exists";
}
public boolean dropTemporaryTableAfterUse() {
return false;
}
public boolean supportsCurrentTimestampSelection() {
return true;
}
public boolean isCurrentTimestampSelectStringCallable() {
return false;
}
public String getCurrentTimestampSelectString() {
return "select current_timestamp";
}
public boolean supportsUnionAll() {
return true;
}
public boolean hasAlterTable() {
return false;
}
public boolean dropConstraints() {
return false;
}
public String getAddColumnString() {
return "add column";
}
public String getForUpdateString() {
return "";
}
public boolean supportsOuterJoinForUpdate() {
return false;
}
public String getDropForeignKeyString() {
throw new UnsupportedOperationException("No drop foreign key syntax supported by SQLiteDialect");
}
public String getAddForeignKeyConstraintString(String constraintName,
String[] foreignKey, String referencedTable, String[] primaryKey,
boolean referencesPrimaryKey) {
throw new UnsupportedOperationException("No add foreign key syntax supported by SQLiteDialect");
}
public String getAddPrimaryKeyConstraintString(String constraintName) {
throw new UnsupportedOperationException("No add primary key syntax supported by SQLiteDialect");
}
public boolean supportsIfExistsBeforeTableName() {
return true;
}
public boolean supportsCascadeDelete() {
return false;
}
}
用户@实体:
import com.fasterxml.jackson.annotation.JsonIgnore;
import lombok.AllArgsConstructor;
import lombok.NoArgsConstructor;
import javax.persistence.*;
import java.util.*;
import static javax.persistence.FetchType.*;
import static javax.persistence.GenerationType.*;
@Entity
@NoArgsConstructor
@AllArgsConstructor
public class User {
@Id
@GeneratedValue(strategy = AUTO)
private Long id;
@JsonIgnore
private String username;
@JsonIgnore
private String password;
@JsonIgnore
@OneToOne(mappedBy = "user")
private Port port;
@JsonIgnore
@ManyToMany(fetch = EAGER)
private Collection<Role> roles = new ArrayList<>();
@JsonIgnore
@OneToMany(mappedBy = "user")
private Set<Log> logs=new HashSet<>();
}
我的回购协议是:
import UPCPolska.Iperf.data.archetypes.User;
import org.springframework.data.jpa.repository.JpaRepository;
public interface UserRepo extends JpaRepository<User, Long> {
User findByUsername(String username);
}
当然我有更多的表与关系,但它是太多,显示在这里。也许我的数据库是创建不正确的,我只是创建了一个空文件没有扩展名,我必须初始化它吗?还有,我需要做一些特殊的使用伪造密钥?什么可能是问题?
2条答案
按热度按时间nbysray51#
您可以通过将此配置添加到您的
application.propertis
中来自动创建表:它有update、create-drop和其他可以从documentation读取的选项。
在您启动springboot应用程序时,它将创建您的表。
r8uurelv2#
您可以通过将以下属性添加到www.example.com中来自动创建表application.properties:
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