diff --git a/datagear-meta/src/main/java/org/datagear/meta/Table.java b/datagear-meta/src/main/java/org/datagear/meta/Table.java
index 7a8a56d1..cd7bfae8 100644
--- a/datagear-meta/src/main/java/org/datagear/meta/Table.java
+++ b/datagear-meta/src/main/java/org/datagear/meta/Table.java
@@ -28,6 +28,9 @@ public class Table extends AbstractTable
 	/** 导入外键 */
 	private ImportKey[] importKeys;
 
+	/** 表是否只读 */
+	private boolean readonly = false;
+
 	public Table()
 	{
 		super();
@@ -94,6 +97,16 @@ public class Table extends AbstractTable
 		this.importKeys = importKeys;
 	}
 
+	public boolean isReadonly()
+	{
+		return readonly;
+	}
+
+	public void setReadonly(boolean readonly)
+	{
+		this.readonly = readonly;
+	}
+
 	/**
 	 * 获取指定名称的{@linkplain Column}。
 	 * 
diff --git a/datagear-meta/src/main/java/org/datagear/meta/resolver/AbstractDevotedDBMetaResolver.java b/datagear-meta/src/main/java/org/datagear/meta/resolver/AbstractDevotedDBMetaResolver.java
index 2f390165..aa3daf7a 100644
--- a/datagear-meta/src/main/java/org/datagear/meta/resolver/AbstractDevotedDBMetaResolver.java
+++ b/datagear-meta/src/main/java/org/datagear/meta/resolver/AbstractDevotedDBMetaResolver.java
@@ -104,6 +104,12 @@ public abstract class AbstractDevotedDBMetaResolver implements DevotedDBMetaReso
 	@Override
 	public Table getTable(Connection cn, String tableName) throws DBMetaResolverException
 	{
+		@JDBCCompatiblity("如果cn为readonly，某些驱动程序的DatabaseMetaData.isReadOnly()也将为true（比如：Postgresql JDBC 42.2.5），"
+				+ "这会导致解析Table.readonly不正确，因此这里设为false，以保证解析正确")
+		boolean readonly = JdbcUtil.isReadonlyIfSupports(cn, true);
+		if (readonly)
+			JdbcUtil.setReadonlyIfSupports(cn, false);
+
 		DatabaseMetaData metaData = getDatabaseMetaData(cn);
 		String schema = getSchema(cn, metaData);
 
@@ -357,6 +363,8 @@ public abstract class AbstractDevotedDBMetaResolver implements DevotedDBMetaReso
 	protected Table getTable(Connection cn, DatabaseMetaData metaData, String schema, String tableName)
 			throws DBMetaResolverException
 	{
+		boolean readonly = resolveTableReadonly(cn);
+
 		List<SimpleTable> simpleTables = getSimpleTables(cn, metaData, schema, tableName);
 
 		if (simpleTables == null || simpleTables.isEmpty())
@@ -372,12 +380,33 @@ public abstract class AbstractDevotedDBMetaResolver implements DevotedDBMetaReso
 		table.setPrimaryKey(getPrimaryKey(cn, metaData, schema, tableName));
 		table.setUniqueKeys(getUniqueKeys(cn, metaData, schema, tableName));
 		table.setImportKeys(getImportKeys(cn, metaData, schema, tableName));
+		table.setReadonly(readonly);
 
 		table = postProcessTable(cn, metaData, schema, table);
 
 		return table;
 	}
 
+	protected boolean resolveTableReadonly(Connection cn)
+	{
+		@JDBCCompatiblity("如果cn为readonly，某些驱动程序的DatabaseMetaData.isReadOnly()也将为true（比如：Postgresql JDBC 42.2.5），"
+				+ "这会导致解析Table.readonly不正确，因此这里尝试设为false，来测试数据库是否为只读")
+		boolean cnReadonly = JdbcUtil.isReadonlyIfSupports(cn, true);
+		if (cnReadonly)
+			JdbcUtil.setReadonlyIfSupports(cn, false);
+
+		try
+		{
+			// 数据库是否只读
+			boolean dbReadonly = cn.getMetaData().isReadOnly();
+			return dbReadonly;
+		}
+		catch(SQLException e)
+		{
+			return false;
+		}
+	}
+
 	protected Table postProcessTable(Connection cn, DatabaseMetaData metaData, String schema, Table table)
 	{
 		return table;
diff --git a/datagear-web/src/main/java/org/datagear/web/controller/DataController.java b/datagear-web/src/main/java/org/datagear/web/controller/DataController.java
index ec0363be..f0d356f6 100644
--- a/datagear-web/src/main/java/org/datagear/web/controller/DataController.java
+++ b/datagear-web/src/main/java/org/datagear/web/controller/DataController.java
@@ -186,6 +186,7 @@ public class DataController extends AbstractSchemaConnTableController
 				springModel.addAttribute(KEY_TITLE_DISPLAY_NAME, table.getName());
 				springModel.addAttribute(KEY_TITLE_DISPLAY_DESC, table.getComment());
 				springModel.addAttribute(KEY_SQL_IDENTIFIER_QUOTE, dialect.getIdentifierQuote());
+				springModel.addAttribute("readonly", table.isReadonly());
 				setGridPageAttributes(request, response, springModel, schema, table);
 			}
 		}.execute();
diff --git a/datagear-web/src/main/java/org/datagear/web/controller/SchemaController.java b/datagear-web/src/main/java/org/datagear/web/controller/SchemaController.java
index d1740a4a..f49f55c1 100644
--- a/datagear-web/src/main/java/org/datagear/web/controller/SchemaController.java
+++ b/datagear-web/src/main/java/org/datagear/web/controller/SchemaController.java
@@ -251,7 +251,7 @@ public class SchemaController extends AbstractSchemaConnTableController
 	@ResponseBody
 	public PagingData<SimpleTable> pagingQueryTable(HttpServletRequest request, HttpServletResponse response,
 			org.springframework.ui.Model springModel, @PathVariable("schemaId") String schemaId,
-			@RequestBody(required = false) PagingQuery pagingQueryParam) throws Throwable
+			PagingQuery pagingQueryParam) throws Throwable
 	{
 		final PagingQuery pagingQuery = inflatePagingQuery(request, pagingQueryParam, COOKIE_PAGINATION_SIZE);
 
diff --git a/datagear-web/src/main/resources/org/datagear/web/webapp/view/freemarker/main.ftl b/datagear-web/src/main/resources/org/datagear/web/webapp/view/freemarker/main.ftl
index beeef941..318bc4db 100644
--- a/datagear-web/src/main/resources/org/datagear/web/webapp/view/freemarker/main.ftl
+++ b/datagear-web/src/main/resources/org/datagear/web/webapp/view/freemarker/main.ftl
@@ -374,8 +374,6 @@ ${detectNewVersionScript}
 				{
 					"data" :
 					{
-						contentType: $.CONTENT_TYPE_JSON,
-						"type" : "POST",
 						"url" : function(node)
 						{
 							//根节点
@@ -449,7 +447,6 @@ ${detectNewVersionScript}
 					
 					$.ajax($.toPath(false, contextPath, "schema", schemaId, "pagingQueryTable"),
 					{
-						contentType: $.CONTENT_TYPE_JSON,
 						data : param,
 						success : function(pagingData)
 						{