我将尝试配置Spring Boot,以便将Tomcat连接池连接到我的生产数据库。我的应用程序不是Web应用程序(我也很难向Spring表达这一点)。我有一个启动类和另外3个类。
代码:
这是配置信息: ``
@Configuration
@EnableAutoConfiguration(exclude = DataSourceAutoConfiguration.class)
public class Starter {
private static Logger logger;
@Autowired
private static MyController controller;
public static void main(String[] args) {
// SpringApplication.setWebEnvironment(false);
SpringApplication.run(Starter.class, args);
LogbackConfigLoader lcl = new LogbackConfigLoader();
if (lcl.init()) {
logger = LoggerFactory.getLogger(Starter.class);
logger.debug("Initialized....");
}
else{
logger = LoggerFactory.getLogger(Starter.class);
}
logger.info(controller.getProva());
}
}
这是配置信息: ``
@Configuration
@ConfigurationProperties(prefix="datasource.NIS")
public class NISDBConfiguration {
private String jdbcInterceptors;
private long validationInterval = 30000;
private org.apache.tomcat.jdbc.pool.DataSource pool;
@Value("${driver-class-name}")
private String driverClassName;
@Value("${url}")
private String url;
@Value("${username}")
private String username;
@Value("${password}")
private String password;
@Value("${maxActive}")
private int maxActive = 30;
@Value("${maxIdle}")
private int maxIdle = 8;
@Value("${minIdle}")
private int minIdle = 8;
@Value("${initialSize}")
private int initialSize = 10;
private String validationQuery;
private boolean testOnBorrow;
private boolean testOnReturn;
private boolean testWhileIdle;
private Integer timeBetweenEvictionRunsMillis;
private Integer minEvictableIdleTimeMillis;
private Integer maxWaitMillis;
public String getJdbcInterceptors() {
return jdbcInterceptors;
}
public void setJdbcInterceptors(String jdbcInterceptors) {
this.jdbcInterceptors = jdbcInterceptors;
}
public long getValidationInterval() {
return validationInterval;
}
public void setValidationInterval(long validationInterval) {
this.validationInterval = validationInterval;
}
public org.apache.tomcat.jdbc.pool.DataSource getPool() {
return pool;
}
public void setPool(org.apache.tomcat.jdbc.pool.DataSource pool) {
this.pool = pool;
}
public String getDriverClassName() {
return driverClassName;
}
public void setDriverClassName(String driverClassName) {
this.driverClassName = driverClassName;
}
public String getUrl() {
return url;
}
public void setUrl(String url) {
this.url = url;
}
public String getUsername() {
return username;
}
public void setUsername(String username) {
this.username = username;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
public int getMaxActive() {
return maxActive;
}
public void setMaxActive(int maxActive) {
this.maxActive = maxActive;
}
public int getMaxIdle() {
return maxIdle;
}
public void setMaxIdle(int maxIdle) {
this.maxIdle = maxIdle;
}
public int getMinIdle() {
return minIdle;
}
public void setMinIdle(int minIdle) {
this.minIdle = minIdle;
}
public int getInitialSize() {
return initialSize;
}
public void setInitialSize(int initialSize) {
this.initialSize = initialSize;
}
public String getValidationQuery() {
return validationQuery;
}
public void setValidationQuery(String validationQuery) {
this.validationQuery = validationQuery;
}
public boolean isTestOnBorrow() {
return testOnBorrow;
}
public void setTestOnBorrow(boolean testOnBorrow) {
this.testOnBorrow = testOnBorrow;
}
public boolean isTestOnReturn() {
return testOnReturn;
}
public void setTestOnReturn(boolean testOnReturn) {
this.testOnReturn = testOnReturn;
}
public boolean isTestWhileIdle() {
return testWhileIdle;
}
public void setTestWhileIdle(boolean testWhileIdle) {
this.testWhileIdle = testWhileIdle;
}
public Integer getTimeBetweenEvictionRunsMillis() {
return timeBetweenEvictionRunsMillis;
}
public void setTimeBetweenEvictionRunsMillis(
Integer timeBetweenEvictionRunsMillis) {
this.timeBetweenEvictionRunsMillis = timeBetweenEvictionRunsMillis;
}
public Integer getMinEvictableIdleTimeMillis() {
return minEvictableIdleTimeMillis;
}
public void setMinEvictableIdleTimeMillis(Integer minEvictableIdleTimeMillis) {
this.minEvictableIdleTimeMillis = minEvictableIdleTimeMillis;
}
public Integer getMaxWaitMillis() {
return maxWaitMillis;
}
public void setMaxWaitMillis(Integer maxWaitMillis) {
this.maxWaitMillis = maxWaitMillis;
}
@Bean(name = "dsNIS")
public DataSource dataSource() {
this.pool = new org.apache.tomcat.jdbc.pool.DataSource();
this.pool.setDriverClassName(getDriverClassName());
this.pool.setUrl(getUrl());
this.pool.setUsername(getUsername());
this.pool.setPassword(getPassword());
this.pool.setInitialSize(getInitialSize());
this.pool.setMaxActive(getMaxActive());
this.pool.setMaxIdle(getMaxIdle());
this.pool.setMinIdle(getMinIdle());
this.pool.setTestOnBorrow(isTestOnBorrow());
this.pool.setTestOnReturn(isTestOnReturn());
this.pool.setTestWhileIdle(isTestWhileIdle());
if (getTimeBetweenEvictionRunsMillis() != null) {
this.pool
.setTimeBetweenEvictionRunsMillis(getTimeBetweenEvictionRunsMillis());
}
if (getMinEvictableIdleTimeMillis() != null) {
this.pool.setMinEvictableIdleTimeMillis(getMinEvictableIdleTimeMillis());
}
this.pool.setValidationQuery(getValidationQuery());
this.pool.setValidationInterval(this.validationInterval);
if (getMaxWaitMillis() != null) {
this.pool.setMaxWait(getMaxWaitMillis());
}
if (this.jdbcInterceptors != null) {
this.pool.setJdbcInterceptors(this.jdbcInterceptors);
}
return this.pool;
}
@PreDestroy
public void close() {
if (this.pool != null) {
this.pool.close();
}
}
@Bean(name = "jdbcNIS")
public JdbcTemplate jdbcTemplate(DataSource dsNIS) {
return new JdbcTemplate(dsNIS);
}
} `
the repository
package org.hp.data;
@Repository
public class NisRepository {
protected final Logger log = LoggerFactory.getLogger(getClass());
@Autowired
@Qualifier("jdbcNIS")
protected JdbcTemplate jdbc;
public String getItem(long id) {
return jdbc.queryForObject("SELECT * FROM sb_item WHERE id=?", itemMapper, id);
}
private static final RowMapper<String> itemMapper = new RowMapper<String>() {
@Override
public String mapRow(ResultSet rs, int rowNum) throws SQLException {
String item = rs.getString("title");
return item;
}
};
public JdbcTemplate getJdbc() {
return jdbc;
}
public void setJdbc(JdbcTemplate jdbc) {
this.jdbc = jdbc;
}
}
控制器
@Controller
public class MyController {
@Autowired
private NisRepository items;
public NisRepository getItems() {
return items;
}
public void setItems(NisRepository items) {
this.items = items;
}
public String getProva(){
return items.getItem(10);
}
但是当我运行应用程序时,总是会出现NullPointerException异常,因为MyController没有自动装配并且始终为空。
我也尝试使用new创建一个新实例(但我相信这不正确,因为这与Spring MVC模式不符)。
问题在哪里?
提前致谢。
@Controller
注解来注释Spring MVC(即Web)控制器? - JB Nizet