java.beans.PropertyEditor#setAsText ( )源码实例Demo

public static Object getValueFromPropertyEditorManager(
                 Class<?> attrClass, String attrName, String attrValue) 
    throws JasperException 
{
    try {
        PropertyEditor propEditor = 
            PropertyEditorManager.findEditor(attrClass);
        if (propEditor != null) {
            propEditor.setAsText(attrValue);
            return propEditor.getValue();
        } else {
            throw new IllegalArgumentException(
                Localizer.getMessage("jsp.error.beans.propertyeditor.notregistered"));
        }
    } catch (IllegalArgumentException ex) {
        throw new JasperException(
            Localizer.getMessage("jsp.error.beans.property.conversion",
                                 attrValue, attrClass.getName(), attrName,
                                 ex.getMessage()));
    }
}
 

@Test
public void testUnqualifiedPathNameNotFound() throws Exception {
	PropertyEditor pathEditor = new PathEditor();
	String fileName = ClassUtils.classPackageAsResourcePath(getClass()) + "/" +
			ClassUtils.getShortName(getClass()) + ".clazz";
	pathEditor.setAsText(fileName);
	Object value = pathEditor.getValue();
	assertTrue(value instanceof Path);
	Path path = (Path) value;
	File file = path.toFile();
	assertFalse(file.exists());
	String absolutePath = file.getAbsolutePath();
	if (File.separatorChar == '\\') {
		absolutePath = absolutePath.replace('\\', '/');
	}
	assertTrue(absolutePath.endsWith(fileName));
}
 

@Test
public void testClasspathURL() throws Exception {
	PropertyEditor urlEditor = new URLEditor();
	urlEditor.setAsText("classpath:" + ClassUtils.classPackageAsResourcePath(getClass()) +
			"/" + ClassUtils.getShortName(getClass()) + ".class");
	Object value = urlEditor.getValue();
	assertTrue(value instanceof URL);
	URL url = (URL) value;
	assertEquals(url.toExternalForm(), urlEditor.getAsText());
	assertTrue(!url.getProtocol().startsWith("classpath"));
}
 

@Test
public void testFileEditorWithRelativePath() {
	PropertyEditor fileEditor = new FileEditor();
	try {
		fileEditor.setAsText("myfile.txt");
	}
	catch (IllegalArgumentException ex) {
		// expected: should get resolved as class path resource,
		// and there is no such resource in the class path...
	}
}
 

@Test
public void testFileEditorWithAbsolutePath() {
	PropertyEditor fileEditor = new FileEditor();
	// testing on Windows
	if (new File("C:/myfile.txt").isAbsolute()) {
		fileEditor.setAsText("C:/myfile.txt");
		assertEquals(new File("C:/myfile.txt"), fileEditor.getValue());
	}
	// testing on Unix
	if (new File("/myfile.txt").isAbsolute()) {
		fileEditor.setAsText("/myfile.txt");
		assertEquals(new File("/myfile.txt"), fileEditor.getValue());
	}
}
 

@Test
public void testBindingWithCustomFormatter() {
	TestBean tb = new TestBean();
	DataBinder binder = new DataBinder(tb);
	binder.addCustomFormatter(new NumberStyleFormatter(), Float.class);
	MutablePropertyValues pvs = new MutablePropertyValues();
	pvs.add("myFloat", "1,2");

	LocaleContextHolder.setLocale(Locale.GERMAN);
	try {
		binder.bind(pvs);
		assertEquals(new Float(1.2), tb.getMyFloat());
		assertEquals("1,2", binder.getBindingResult().getFieldValue("myFloat"));

		PropertyEditor editor = binder.getBindingResult().findEditor("myFloat", Float.class);
		assertNotNull(editor);
		editor.setValue(new Float(1.4));
		assertEquals("1,4", editor.getAsText());

		editor = binder.getBindingResult().findEditor("myFloat", null);
		assertNotNull(editor);
		editor.setAsText("1,6");
		assertTrue(((Number) editor.getValue()).floatValue() == 1.6f);
	}
	finally {
		LocaleContextHolder.resetLocaleContext();
	}
}
 

@Test
public void testSystemPropertyReplacement() {
	PropertyEditor editor = new ResourceEditor();
	System.setProperty("test.prop", "foo");
	try {
		editor.setAsText("${test.prop}-${bar}");
		Resource resolved = (Resource) editor.getValue();
		assertEquals("foo-${bar}", resolved.getFilename());
	}
	finally {
		System.getProperties().remove("test.prop");
	}
}
 

@Test
public void testPatternResource() throws Exception {
	// N.B. this will sometimes fail if you use classpath: instead of classpath*:.
	// The result depends on the classpath - if test-classes are segregated from classes
	// and they come first on the classpath (like in Maven) then it breaks, if classes
	// comes first (like in Spring Build) then it is OK.
	PropertyEditor editor = new ResourceArrayPropertyEditor();
	editor.setAsText("classpath*:org/springframework/core/io/support/Resource*Editor.class");
	Resource[] resources = (Resource[]) editor.getValue();
	assertNotNull(resources);
	assertTrue(resources[0].exists());
}
 

@Test
public void setAsTextWithNull() throws Exception {
	PropertyEditor uriEditor = new URIEditor();
	uriEditor.setAsText(null);
	assertNull(uriEditor.getValue());
	assertEquals("", uriEditor.getAsText());
}
 

@Test
public void testClasspathPathName() throws Exception {
	PropertyEditor pathEditor = new PathEditor();
	pathEditor.setAsText("classpath:" + ClassUtils.classPackageAsResourcePath(getClass()) + "/" +
			ClassUtils.getShortName(getClass()) + ".class");
	Object value = pathEditor.getValue();
	assertTrue(value instanceof Path);
	Path path = (Path) value;
	assertTrue(path.toFile().exists());
}
 

@Test
public void testPatternResource() throws Exception {
	// N.B. this will sometimes fail if you use classpath: instead of classpath*:.
	// The result depends on the classpath - if test-classes are segregated from classes
	// and they come first on the classpath (like in Maven) then it breaks, if classes
	// comes first (like in Spring Build) then it is OK.
	PropertyEditor editor = new ResourceArrayPropertyEditor();
	editor.setAsText("classpath*:org/springframework/core/io/support/Resource*Editor.class");
	Resource[] resources = (Resource[]) editor.getValue();
	assertNotNull(resources);
	assertTrue(resources[0].exists());
}
 

@Test
public void encodeAlreadyEncodedURI() throws Exception {
	PropertyEditor uriEditor = new URIEditor(false);
	uriEditor.setAsText("https://example.com/spaces%20and%20%E2%82%AC");
	Object value = uriEditor.getValue();
	assertTrue(value instanceof URI);
	URI uri = (URI) value;
	assertEquals(uri.toString(), uriEditor.getAsText());
	assertEquals("https://example.com/spaces%20and%20%E2%82%AC", uri.toASCIIString());
}
 

@Test
public void testBindingWithFormatter() {
	TestBean tb = new TestBean();
	DataBinder binder = new DataBinder(tb);
	FormattingConversionService conversionService = new FormattingConversionService();
	DefaultConversionService.addDefaultConverters(conversionService);
	conversionService.addFormatterForFieldType(Float.class, new NumberStyleFormatter());
	binder.setConversionService(conversionService);
	MutablePropertyValues pvs = new MutablePropertyValues();
	pvs.add("myFloat", "1,2");

	LocaleContextHolder.setLocale(Locale.GERMAN);
	try {
		binder.bind(pvs);
		assertEquals(new Float(1.2), tb.getMyFloat());
		assertEquals("1,2", binder.getBindingResult().getFieldValue("myFloat"));

		PropertyEditor editor = binder.getBindingResult().findEditor("myFloat", Float.class);
		assertNotNull(editor);
		editor.setValue(new Float(1.4));
		assertEquals("1,4", editor.getAsText());

		editor = binder.getBindingResult().findEditor("myFloat", null);
		assertNotNull(editor);
		editor.setAsText("1,6");
		assertEquals(new Float(1.6), editor.getValue());
	}
	finally {
		LocaleContextHolder.resetLocaleContext();
	}
}
 

@Test
public void testSystemPropertyReplacement() {
	PropertyEditor editor = new ResourceEditor();
	System.setProperty("test.prop", "foo");
	try {
		editor.setAsText("${test.prop}-${bar}");
		Resource resolved = (Resource) editor.getValue();
		assertEquals("foo-${bar}", resolved.getFilename());
	}
	finally {
		System.getProperties().remove("test.prop");
	}
}
 

@Test
public void testStandardURL() throws Exception {
	PropertyEditor urlEditor = new URLEditor();
	urlEditor.setAsText("http://www.springframework.org");
	Object value = urlEditor.getValue();
	assertTrue(value instanceof URL);
	URL url = (URL) value;
	assertEquals(url.toExternalForm(), urlEditor.getAsText());
}
 

private void doTestURI(String uriSpec) {
	PropertyEditor uriEditor = new URIEditor();
	uriEditor.setAsText(uriSpec);
	Object value = uriEditor.getValue();
	assertTrue(value instanceof URI);
	URI uri = (URI) value;
	assertEquals(uriSpec, uri.toString());
}
 

@Test
public void sunnyDay() throws Exception {
	PropertyEditor editor = new ResourceEditor();
	editor.setAsText("classpath:org/springframework/core/io/ResourceEditorTests.class");
	Resource resource = (Resource) editor.getValue();
	assertNotNull(resource);
	assertTrue(resource.exists());
}
 

@Test
public void sunnyDay() throws Exception {
	PropertyEditor editor = new ResourceEditor();
	editor.setAsText("classpath:org/springframework/core/io/ResourceEditorTests.class");
	Resource resource = (Resource) editor.getValue();
	assertNotNull(resource);
	assertTrue(resource.exists());
}
 

public static final Object coerceToType(final Object obj,
        final Class<?> type) throws ELException {
    if (type == null || Object.class.equals(type) ||
            (obj != null && type.isAssignableFrom(obj.getClass()))) {
        return obj;
    }
    if (String.class.equals(type)) {
        return coerceToString(obj);
    }
    if (ELArithmetic.isNumberType(type)) {
        return coerceToNumber(obj, type);
    }
    if (Character.class.equals(type) || Character.TYPE == type) {
        return coerceToCharacter(obj);
    }
    if (Boolean.class.equals(type) || Boolean.TYPE == type) {
        return coerceToBoolean(obj);
    }
    if (type.isEnum()) {
        return coerceToEnum(obj, type);
    }

    // new to spec
    if (obj == null)
        return null;
    if (obj instanceof String) {
        PropertyEditor editor = PropertyEditorManager.findEditor(type);
        if (editor == null) {
            if ("".equals(obj)) {
                return null;
            }
            throw new ELException(MessageFactory.get("error.convert", obj,
                    obj.getClass(), type));
        } else {
            try {
                editor.setAsText((String) obj);
                return editor.getValue();
            } catch (RuntimeException e) {
                if ("".equals(obj)) {
                    return null;
                }
                throw new ELException(MessageFactory.get("error.convert",
                        obj, obj.getClass(), type), e);
            }
        }
    }
    throw new ELException(MessageFactory.get("error.convert",
            obj, obj.getClass(), type));
}
 

@Test
public void setAndGetAsTextWithWhitespaceResource() throws Exception {
	PropertyEditor editor = new ResourceEditor();
	editor.setAsText("  ");
	assertEquals("", editor.getAsText());
}