用Java反射写的生成ExtJS MVC model文件的类。

如果你也在写Ext JS的MVC，恰好又遇到了类似下面的这个类。。。。

package cn.com.fri.plugins.setup.po;

public class DataBaseInfo {
	private String databaseProductName;

	private boolean supportsTransactions;

	private String databaseProductVersion;

	private int defaultTransactionIsolation;

	private boolean supportsBatchUpdates;

	private String url;

	private String username;

	private boolean readOnly;

	private boolean supportsColumnAliasing;

	private boolean supportsLikeEscapeClause;

	private boolean supportsLimitedOuterJoins;

	private boolean supportsMultipleTransactions;

	private boolean supportsSubqueriesInExists;

	private boolean supportsSubqueriesInIns;

	private boolean supportsTransactionIsolationLevel;

	private boolean supportsUnion;

	private boolean supportsUnionAll;

	private boolean usesLocalFilePerTable;

	private boolean usesLocalFiles;

	private int databaseMajorVersion;

	private int databaseMinorVersion;

	private int JDBCMajorVersion;

	private int JDBCMinorVersion;

	private String driverName;

	private String driverVersion;

	private String extraNameCharacters;

	private String identifierQuoteString;

	private int maxCatalogNameLength;

	private int maxColumnNameLength;

	private int maxColumnsInGroupBy;
	
	private int maxColumnsInOrderBy;

	public int getMaxColumnsInOrderBy() {
		return maxColumnsInOrderBy;
	}

	public void setMaxColumnsInOrderBy(int maxColumnsInOrderBy) {
		this.maxColumnsInOrderBy = maxColumnsInOrderBy;
	}

	private int maxColumnsInSelect;

	private int maxConnections;

	public String getDatabaseProductName() {
		return databaseProductName;
	}

	public void setDatabaseProductName(String databaseProductName) {
		this.databaseProductName = databaseProductName;
	}

	public boolean isSupportsTransactions() {
		return supportsTransactions;
	}

	public void setSupportsTransactions(boolean supportsTransactions) {
		this.supportsTransactions = supportsTransactions;
	}

	public String getDatabaseProductVersion() {
		return databaseProductVersion;
	}

	public void setDatabaseProductVersion(String databaseProductVersion) {
		this.databaseProductVersion = databaseProductVersion;
	}

	public int getDefaultTransactionIsolation() {
		return defaultTransactionIsolation;
	}

	public void setDefaultTransactionIsolation(int defaultTransactionIsolation) {
		this.defaultTransactionIsolation = defaultTransactionIsolation;
	}

	public boolean isSupportsBatchUpdates() {
		return supportsBatchUpdates;
	}

	public void setSupportsBatchUpdates(boolean supportsBatchUpdates) {
		this.supportsBatchUpdates = supportsBatchUpdates;
	}

	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 boolean isReadOnly() {
		return readOnly;
	}

	public void setReadOnly(boolean readOnly) {
		this.readOnly = readOnly;
	}

	public boolean isSupportsColumnAliasing() {
		return supportsColumnAliasing;
	}

	public void setSupportsColumnAliasing(boolean supportsColumnAliasing) {
		this.supportsColumnAliasing = supportsColumnAliasing;
	}

	public boolean isSupportsLikeEscapeClause() {
		return supportsLikeEscapeClause;
	}

	public void setSupportsLikeEscapeClause(boolean supportsLikeEscapeClause) {
		this.supportsLikeEscapeClause = supportsLikeEscapeClause;
	}

	public boolean isSupportsLimitedOuterJoins() {
		return supportsLimitedOuterJoins;
	}

	public void setSupportsLimitedOuterJoins(boolean supportsLimitedOuterJoins) {
		this.supportsLimitedOuterJoins = supportsLimitedOuterJoins;
	}

	public boolean isSupportsMultipleTransactions() {
		return supportsMultipleTransactions;
	}

	public void setSupportsMultipleTransactions(boolean supportsMultipleTransactions) {
		this.supportsMultipleTransactions = supportsMultipleTransactions;
	}

	public boolean isSupportsSubqueriesInExists() {
		return supportsSubqueriesInExists;
	}

	public void setSupportsSubqueriesInExists(boolean supportsSubqueriesInExists) {
		this.supportsSubqueriesInExists = supportsSubqueriesInExists;
	}

	public boolean isSupportsSubqueriesInIns() {
		return supportsSubqueriesInIns;
	}

	public void setSupportsSubqueriesInIns(boolean supportsSubqueriesInIns) {
		this.supportsSubqueriesInIns = supportsSubqueriesInIns;
	}

	public boolean isSupportsTransactionIsolationLevel() {
		return supportsTransactionIsolationLevel;
	}

	public void setSupportsTransactionIsolationLevel(
			boolean supportsTransactionIsolationLevel) {
		this.supportsTransactionIsolationLevel = supportsTransactionIsolationLevel;
	}

	public boolean isSupportsUnion() {
		return supportsUnion;
	}

	public void setSupportsUnion(boolean supportsUnion) {
		this.supportsUnion = supportsUnion;
	}

	public boolean isSupportsUnionAll() {
		return supportsUnionAll;
	}

	public void setSupportsUnionAll(boolean supportsUnionAll) {
		this.supportsUnionAll = supportsUnionAll;
	}

	public boolean isUsesLocalFilePerTable() {
		return usesLocalFilePerTable;
	}

	public void setUsesLocalFilePerTable(boolean usesLocalFilePerTable) {
		this.usesLocalFilePerTable = usesLocalFilePerTable;
	}

	public boolean isUsesLocalFiles() {
		return usesLocalFiles;
	}

	public void setUsesLocalFiles(boolean usesLocalFiles) {
		this.usesLocalFiles = usesLocalFiles;
	}

	public int getDatabaseMajorVersion() {
		return databaseMajorVersion;
	}

	public void setDatabaseMajorVersion(int databaseMajorVersion) {
		this.databaseMajorVersion = databaseMajorVersion;
	}

	public int getDatabaseMinorVersion() {
		return databaseMinorVersion;
	}

	public void setDatabaseMinorVersion(int databaseMinorVersion) {
		this.databaseMinorVersion = databaseMinorVersion;
	}

	public int getJDBCMajorVersion() {
		return JDBCMajorVersion;
	}

	public void setJDBCMajorVersion(int jDBCMajorVersion) {
		JDBCMajorVersion = jDBCMajorVersion;
	}

	public int getJDBCMinorVersion() {
		return JDBCMinorVersion;
	}

	public void setJDBCMinorVersion(int jDBCMinorVersion) {
		JDBCMinorVersion = jDBCMinorVersion;
	}

	public String getDriverName() {
		return driverName;
	}

	public void setDriverName(String driverName) {
		this.driverName = driverName;
	}

	public String getDriverVersion() {
		return driverVersion;
	}

	public void setDriverVersion(String driverVersion) {
		this.driverVersion = driverVersion;
	}

	public String getExtraNameCharacters() {
		return extraNameCharacters;
	}

	public void setExtraNameCharacters(String extraNameCharacters) {
		this.extraNameCharacters = extraNameCharacters;
	}

	public String getIdentifierQuoteString() {
		return identifierQuoteString;
	}

	public void setIdentifierQuoteString(String identifierQuoteString) {
		this.identifierQuoteString = identifierQuoteString;
	}

	public int getMaxCatalogNameLength() {
		return maxCatalogNameLength;
	}

	public void setMaxCatalogNameLength(int maxCatalogNameLength) {
		this.maxCatalogNameLength = maxCatalogNameLength;
	}

	public int getMaxColumnNameLength() {
		return maxColumnNameLength;
	}

	public void setMaxColumnNameLength(int maxColumnNameLength) {
		this.maxColumnNameLength = maxColumnNameLength;
	}

	public int getMaxColumnsInGroupBy() {
		return maxColumnsInGroupBy;
	}

	public void setMaxColumnsInGroupBy(int maxColumnsInGroupBy) {
		this.maxColumnsInGroupBy = maxColumnsInGroupBy;
	}

	public int getMaxColumnsInSelect() {
		return maxColumnsInSelect;
	}

	public void setMaxColumnsInSelect(int maxColumnsInSelect) {
		this.maxColumnsInSelect = maxColumnsInSelect;
	}

	public int getMaxConnections() {
		return maxConnections;
	}

	public void setMaxConnections(int maxConnections) {
		this.maxConnections = maxConnections;
	}

	public int getMaxCursorNameLength() {
		return maxCursorNameLength;
	}

	public void setMaxCursorNameLength(int maxCursorNameLength) {
		this.maxCursorNameLength = maxCursorNameLength;
	}

	public int getMaxStatements() {
		return maxStatements;
	}

	public void setMaxStatements(int maxStatements) {
		this.maxStatements = maxStatements;
	}

	private int maxCursorNameLength;

	private int maxStatements;
}

你是不是感觉你快要崩溃了呢？

那么这里提供一个自动生成Model的java类

package cn.com.fri.core.utils.extjs;

import java.io.IOException;
import java.lang.reflect.Field;

import org.codehaus.jackson.annotate.JsonIgnoreProperties;

import cn.com.fri.plugins.setup.po.DataBaseInfo;

/**
 * 根据给出的类映射出前端的ExtJS Model.
 * 
 * @author <a href="mailto:[e-mail]">葛昊</a>
 * @since Spring 3.1 Hibernate 4.0 and jdk 1.7
 * @version %I% %G%
 */
public class ReflectObject2ExtJSModel {

	public static String createModel(Class<?> clazz) throws IOException {
		String[] filters = null;
		// 判断该类中是否包含懒加载对象，如果包含懒加载对象，则排除在外。
		if (clazz.isAnnotationPresent(JsonIgnoreProperties.class)) {
			filters = clazz.getAnnotation(JsonIgnoreProperties.class).value();
		}
		Field[] fields = clazz.getDeclaredFields();

		// 这里将里面的包名改成你所需的，或者改用传参的方式也是一个不错的方法！
		String sb = "Ext.define('SystemSetup.model." + clazz.getSimpleName()
				+ "', {\r\n\textend: 'Ext.data.Model',\r\n\tfields:[";

		fieldFor: for (Field field : fields) {
			if (filters != null) {
				for (String f : filters) {
					if (f.equals(field.getName())) {
						continue fieldFor;
					}
				}
			}
			sb += "'" + field.getName() + "',";
		}
		sb = sb.substring(0, sb.length() - 1);
		sb += "]\r\n});";
		// 在这里可以输出为文件，也可以返回一个字符串.
		return sb.toString();
	}

	public static void main(String[] args) {
		try {
			String model = ReflectObject2ExtJSModel
					.createModel(DataBaseInfo.class);
			System.out.println(model);
		} catch (IOException e) {
			e.printStackTrace();
		}
	}
}

这样就没有必要整天写那个破model了，用到的时候直接生成就OK！