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UI5_CRUD 2 App创建

UI5_CRUD 2 App创建

作者: LiuliuZhang | 来源:发表于2017-08-10 15:45 被阅读0次

    创建SAPUI5 Application

    创建Application,并创建XML view,在view1.view.xml的content标签内创建table组件内容

    <Table id="idEmployeeTable"
            inset="false"
            items="{
                path: '/DemoSet'
            }">
            <headerToolbar>
                <Toolbar>
                    <Title text="Employee Details" level="H2"/>
                </Toolbar>
            </headerToolbar>
            <columns>
                <Column>
                    <Text text="Employee ID" />
                </Column>
                <Column>
                    <Text text="First Name" />
                </Column>
                <Column>
                    <Text text="Last Name" />
                </Column>
                <Column>
                    <Text text="Address" />
                </Column>
                <Column>
                    <Text text="Designation" />
                </Column>
                
            </columns>
            <items>
                <ColumnListItem>
                    <cells>
                        <Text
                            text="{Empno}" />
                        <Text
                            text="{Fname}" />
                        <Text
                            text="{Lname}" />
                        <Text
                            text="{Addrs}" />
                        <Text
                            text="{Desgn}" />
                    </cells>
                </ColumnListItem>
            </items>
        </Table>    
    

    在web.xml中,添加SimpleProxyServlet的参数



    在view1.controller.js中,添加init方法

        onInit: function() {
    //      var oModel = new sap.ui.model.odata.ODataModel("proxy/sap/opu/odata/sap/ZLL_DEMO_SRV/");
            var oModel = new sap.ui.model.odata.v2.ODataModel("proxy/sap/opu/odata/sap/ZLL_DEMO_SRV/", { 
                json     : true,
                user     : "username",
                password : "Password"
            });
            this.getView().setModel(oModel);
        },
    

    解决PKIX:unable to find valid certification path to requested target 的问题:对于https,需要导入证书,创建InstallCert class

    import java.io.BufferedReader;
    import java.io.File;
    import java.io.FileInputStream;
    import java.io.FileOutputStream;
    import java.io.InputStream;
    import java.io.InputStreamReader;
    import java.io.OutputStream;
    import java.security.KeyStore;
    import java.security.MessageDigest;
    import java.security.cert.CertificateException;
    import java.security.cert.X509Certificate;
    
    import javax.net.ssl.SSLContext;
    import javax.net.ssl.SSLException;
    import javax.net.ssl.SSLSocket;
    import javax.net.ssl.SSLSocketFactory;
    import javax.net.ssl.TrustManager;
    import javax.net.ssl.TrustManagerFactory;
    import javax.net.ssl.X509TrustManager;
    
    public class InstallCert {
    
        public static void main(String[] args) throws Exception {
            String host;
            int port;
            char[] passphrase;
            if ((args.length == 1) || (args.length == 2)) {
                String[] c = args[0].split(":");
                host = c[0];
                port = (c.length == 1) ? 443 : Integer.parseInt(c[1]);
                String p = (args.length == 1) ? "changeit" : args[1];
                passphrase = p.toCharArray();
            } else {
                System.out
                        .println("Usage: java InstallCert <host>[:port] [passphrase]");
                return;
            }
    
            File file = new File("jssecacerts");
            if (file.isFile() == false) {
                char SEP = File.separatorChar;
                File dir = new File(System.getProperty("java.home") + SEP + "lib"
                        + SEP + "security");
                file = new File(dir, "jssecacerts");
                if (file.isFile() == false) {
                    file = new File(dir, "cacerts");
                }
            }
            System.out.println("Loading KeyStore " + file + "...");
            InputStream in = new FileInputStream(file);
            KeyStore ks = KeyStore.getInstance(KeyStore.getDefaultType());
            ks.load(in, passphrase);
            in.close();
    
            SSLContext context = SSLContext.getInstance("TLS");
            TrustManagerFactory tmf = TrustManagerFactory
                    .getInstance(TrustManagerFactory.getDefaultAlgorithm());
            tmf.init(ks);
            X509TrustManager defaultTrustManager = (X509TrustManager) tmf
                    .getTrustManagers()[0];
            SavingTrustManager tm = new SavingTrustManager(defaultTrustManager);
            context.init(null, new TrustManager[] { tm }, null);
            SSLSocketFactory factory = context.getSocketFactory();
    
            System.out
                    .println("Opening connection to " + host + ":" + port + "...");
            SSLSocket socket = (SSLSocket) factory.createSocket(host, port);
            socket.setSoTimeout(10000);
            try {
                System.out.println("Starting SSL handshake...");
                socket.startHandshake();
                socket.close();
                System.out.println();
                System.out.println("No errors, certificate is already trusted");
            } catch (SSLException e) {
                System.out.println();
                e.printStackTrace(System.out);
            }
    
            X509Certificate[] chain = tm.chain;
            if (chain == null) {
                System.out.println("Could not obtain server certificate chain");
                return;
            }
    
            BufferedReader reader = new BufferedReader(new InputStreamReader(
                    System.in));
    
            System.out.println();
            System.out.println("Server sent " + chain.length + " certificate(s):");
            System.out.println();
            MessageDigest sha1 = MessageDigest.getInstance("SHA1");
            MessageDigest md5 = MessageDigest.getInstance("MD5");
            for (int i = 0; i < chain.length; i++) {
                X509Certificate cert = chain[i];
                System.out.println(" " + (i + 1) + " Subject "
                        + cert.getSubjectDN());
                System.out.println("   Issuer  " + cert.getIssuerDN());
                sha1.update(cert.getEncoded());
                System.out.println("   sha1    " + toHexString(sha1.digest()));
                md5.update(cert.getEncoded());
                System.out.println("   md5     " + toHexString(md5.digest()));
                System.out.println();
            }
    
            System.out
                    .println("Enter certificate to add to trusted keystore or 'q' to quit: [1]");
            String line = reader.readLine().trim();
            int k;
            try {
                k = (line.length() == 0) ? 0 : Integer.parseInt(line) - 1;
            } catch (NumberFormatException e) {
                System.out.println("KeyStore not changed");
                return;
            }
    
            X509Certificate cert = chain[k];
            String alias = host + "-" + (k + 1);
            ks.setCertificateEntry(alias, cert);
    
            OutputStream out = new FileOutputStream("jssecacerts");
            ks.store(out, passphrase);
            out.close();
    
            System.out.println();
            System.out.println(cert);
            System.out.println();
            System.out
                    .println("Added certificate to keystore 'jssecacerts' using alias '"
                            + alias + "'");
        }
    
        private static final char[] HEXDIGITS = "0123456789abcdef".toCharArray();
    
        private static String toHexString(byte[] bytes) {
            StringBuilder sb = new StringBuilder(bytes.length * 3);
            for (int b : bytes) {
                b &= 0xff;
                sb.append(HEXDIGITS[b >> 4]);
                sb.append(HEXDIGITS[b & 15]);
                sb.append(' ');
            }
            return sb.toString();
        }
    
        private static class SavingTrustManager implements X509TrustManager {
    
            private final X509TrustManager tm;
            private X509Certificate[] chain;
    
            SavingTrustManager(X509TrustManager tm) {
                this.tm = tm;
            }
    
            public X509Certificate[] getAcceptedIssuers() {
                throw new UnsupportedOperationException();
            }
    
            public void checkClientTrusted(X509Certificate[] chain, String authType)
                    throws CertificateException {
                throw new UnsupportedOperationException();
            }
    
            public void checkServerTrusted(X509Certificate[] chain, String authType)
                    throws CertificateException {
                this.chain = chain;
                tm.checkServerTrusted(chain, authType);
            }
        }
    
    }
    

    编译InstallCert.java,然后执行:java InstallCert hostname



    输入1,回车,然后会在当前的目录下产生一个名为“ssecacerts”的证书。将证书拷贝到$JAVA_HOME/jre/lib/security目录下,重启服务器,可以看到调用成功。


    修改UI

    给table添加SingleSelect属性



    添加CRUD4个按钮

        <Button id="IdDisplay" press="onDisplay" text="Display"/>
        <Button id="IdUpdate" press="onUpdate" text="Update"/>
        <Button id="IdCreate" press="onCreate" text="Create"/>
        <Button id="IdDelete" press="onDelete" text="Delete"/>
    

    并在controller中创建相应的方法

        onDisplay: function(){      
        },
        onUpdate: function(){
        },
        onCreate: function(){       
        },
        onDelete: function(){       
        },
    

    添加Simple Form,拷贝Change.fragment.xml中的Grid代码



    最终view的代码如下

    <core:View xmlns:core="sap.ui.core" xmlns:mvc="sap.ui.core.mvc" xmlns="sap.m" xmlns:l="sap.ui.layout"
        xmlns:f="sap.ui.layout.form"
            controllerName="tablebinding.view1" xmlns:html="http://www.w3.org/1999/xhtml">
        <Page title="CRUD Operations">
            <content>
        <Table id="idEmployeeTable"
            inset="false"
            mode="SingleSelectLeft"
            items="{
                path: '/DemoSet'
    
            }">
            <headerToolbar>
                <Toolbar>
                    <Title text="Employee Details" level="H2"/>
                </Toolbar>
            </headerToolbar>
            <columns>
                <Column>
                    <Text text="Employee ID" />
                </Column>
                <Column>
                    <Text text="First Name" />
                </Column>
                <Column>
                    <Text text="Last Name" />
                </Column>
                <Column>
                    <Text text="Address" />
                </Column>
                <Column>
                    <Text text="Designation" />
                </Column>
                
            </columns>
            <items>
                <ColumnListItem>
                    <cells>
    
                        <Text
                            text="{Empno}" />
                        <Text
                            text="{Fname}" />
                        <Text
                            text="{Lname}" />
                        <Text
                            text="{Addrs}" />
                        <Text
                            text="{Desgn}" />
    
                    </cells>
                </ColumnListItem>
            </items>
        </Table>    
        <Button id="IdDisplay" press="onDisplay" text="Display"/>
        <Button id="IdUpdate" press="onUpdate" text="Update"/>
        <Button id="IdCreate" press="onCreate" text="Create"/>
        <Button id="IdDelete" press="onDelete" text="Delete"/>
        <VBox class="sapUiSmallMargin">
            <f:SimpleForm id="GridId"
                editable="true"
                layout="ResponsiveGridLayout"
                title="Address"
                labelSpanXL="3"
                labelSpanL="3"
                labelSpanM="3"
                labelSpanS="12"
                adjustLabelSpan="false"
                emptySpanXL="4"
                emptySpanL="4"
                emptySpanM="4"
                emptySpanS="0"
                columnsXL="1"
                columnsL="1"
                columnsM="1"
                singleContainerFullSize="false" >
                <f:content>
                    <Label text="Employee ID" />
                    <Input value="{Empno}" />
                    <Label text="First Name" />
                    <Input value="{Fname}"/>
                    <Label text="Last name" />
                    <Input value="{Lname}" />
                    <Label text="Address" />
                    <Input value="{Addrs}"/>
                    <Label text="Designation" />
                    <Input value="{Desgn}"/>                            
                </f:content>
            </f:SimpleForm>
        </VBox>
        </content>
        </Page>
    </core:View>
    

    UI如图



    可以在init方法中令grid不显示

    var oGrid = this.getView().byId("GridId");
    oGrid.setVisible(false);
    

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